[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130

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richlander merged 2 commits into
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copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged

[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
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copilot/update-ubuntu-container-references-again

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Fixes Issue

main PR #121730

Description

Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.

Updates three container references:

  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64

All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.

Customer Impact

No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.

Regression

No. This is a proactive infrastructure update.

Testing

Changes are configuration-only. CI validation in main has been completed per the original PR.

Risk

Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.

Original prompt

Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.

#121730

The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI changed the title [WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI requested a review from richlanderDecember 3, 2025 00:49
This was referenced Dec 3, 2025
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richlander marked this pull request as ready for review December 3, 2025 16:06
CopilotAI review requested due to automatic review settings December 3, 2025 16:06
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richlander commented Dec 3, 2025

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This change is good to go. All failures are on Android change is Linux-specific.

Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.

I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.

@richlander

richlander commented Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"

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Pull request overview

This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.

  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure

@richlander
richlander enabled auto-merge (squash) December 3, 2025 16:09
agocke
agocke reviewed Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander added the Servicing-approved Approved for servicing release label Dec 3, 2025
@richlander
richlander merged commit 699969d into release/10.0Dec 3, 2025
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Using tell mode for this.

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jkotas deleted the copilot/update-ubuntu-container-references-again branch December 4, 2025 01:57
@richlanderrichlander changed the title Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
@richlanderrichlander mentioned this pull request Dec 9, 2025
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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})();
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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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CopilotAI
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Dec 3, 2025•

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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI
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from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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marked this pull request as ready for review
December 3, 2025 16:06
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review requested due to automatic review settings
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@richlander
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Dec 3, 2025

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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
@richlander
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Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
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reviewed
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View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
the 
Servicing-approved
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label
Dec 3, 2025
@richlander
richlander
merged commit 699969d
into
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Using tell mode for this.
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@richlanderrichlander
changed the title
Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
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, 'i');
if (__m === '*' || __re.test(location.href)) {
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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CopilotAI
commented
Dec 3, 2025•

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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI
requested a review
from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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marked this pull request as ready for review
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review requested due to automatic review settings
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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
@richlander
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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
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reviewed
Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
the 
Servicing-approved
Approved for servicing release
label
Dec 3, 2025
@richlander
richlander
merged commit 699969d
into
release/10.0Dec 3, 2025

101 of 108 checks passed

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Using tell mode for this.
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Dec 3, 2025
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@richlanderrichlander
changed the title
Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
@richlanderrichlander
mentioned this pull request
Dec 9, 2025

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, 'i');
if (__m === '*' || __re.test(location.href)) {
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
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copilot/update-ubuntu-container-references-again
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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI
requested a review
from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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marked this pull request as ready for review
December 3, 2025 16:06
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review requested due to automatic review settings
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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
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Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
agocke
reviewed
Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
the 
Servicing-approved
Approved for servicing release
label
Dec 3, 2025
@richlander
richlander
merged commit 699969d
into
release/10.0Dec 3, 2025

101 of 108 checks passed

@richlander
richlander
commented
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Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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Dec 3, 2025•

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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
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from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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review requested due to automatic review settings
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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
@richlander
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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
agocke
reviewed
Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
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Dec 3, 2025
@richlander
richlander
merged commit 699969d
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@dotnet-maestrodotnet-maestroBot
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December 4, 2025 01:57
@richlanderrichlander
changed the title
Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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CopilotAI
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Dec 3, 2025•

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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI
requested a review
from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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marked this pull request as ready for review
December 3, 2025 16:06
CopilotAI
review requested due to automatic review settings
December 3, 2025 16:06
@richlander
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Dec 3, 2025

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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
@richlander
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Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
agocke
reviewed
Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
the 
Servicing-approved
Approved for servicing release
label
Dec 3, 2025
@richlander
richlander
merged commit 699969d
into
release/10.0Dec 3, 2025

101 of 108 checks passed

@richlander
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commented
Dec 3, 2025

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Using tell mode for this.
@dotnet-maestrodotnet-maestroBot
mentioned this pull request
Dec 3, 2025
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@jkotas
jkotas
deleted the

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December 4, 2025 01:57
@richlanderrichlander
changed the title
Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
@richlanderrichlander
mentioned this pull request
Dec 9, 2025

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@richlander@agocke

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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CopilotAI
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Dec 3, 2025•

edited

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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.
@richlander
Update Ubuntu container references from 25.10 to 26.04
0044e25
Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
CopilotAI
changed the title
[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
CopilotAI
requested a review
from richlanderDecember 3, 2025 00:49

This was referenced Dec 3, 2025

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@richlander
richlander
marked this pull request as ready for review
December 3, 2025 16:06
CopilotAI
review requested due to automatic review settings
December 3, 2025 16:06
@richlander
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Dec 3, 2025

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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
@richlander
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Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
@richlander
richlander
enabled auto-merge (squash)
December 3, 2025 16:09
agocke
agocke
reviewed
Dec 3, 2025
View reviewed changes
Comment threadeng/pipelines/libraries/helix-queues-setup.yml
@richlanderrichlander
added
the 
Servicing-approved
Approved for servicing release
label
Dec 3, 2025
@richlander
richlander
merged commit 699969d
into
release/10.0Dec 3, 2025

101 of 108 checks passed

@richlander
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commented
Dec 3, 2025

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Using tell mode for this.
@dotnet-maestrodotnet-maestroBot
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Dec 3, 2025
 Merged

@jkotas
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deleted the

copilot/update-ubuntu-container-references-again

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December 4, 2025 01:57
@richlanderrichlander
changed the title
Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
@richlanderrichlander
mentioned this pull request
Dec 9, 2025

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@richlander@agocke

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
[release/10.0] Update Ubuntu container references from 25.10 to 26.04 - #122130
Merged
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
Dec 3, 2025
Merged
[release/10.0] Update Ubuntu container references from 25.10 to 26.04#122130
richlander merged 2 commits into
release/10.0from 
copilot/update-ubuntu-container-references-again
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Fixes Issue 
main PR #121730
Description
Backports Ubuntu container version updates from main. Changes Ubuntu 25.10 (preview during initial addition) to 26.04 (now in preview with official container releases) for Helix test infrastructure.
Updates three container references:
  • eng/pipelines/installer/helix-queues-setup.yml: Linux ARM64
  • eng/pipelines/libraries/helix-queues-setup.yml: Linux ARM64 and AMD64
All changes target container images only (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*). VM references remain unchanged. The helix-platforms.yml file does not exist in release/10.0.
Customer Impact
No direct customer impact. Infrastructure change to align test environments with current Ubuntu preview release.
Regression
No. This is a proactive infrastructure update.
Testing
Changes are configuration-only. CI validation in main has been completed per the original PR.
Risk
Low. Container references already validated in main branch. No code changes, only test infrastructure configuration.
Original prompt
Please apply PR #121730 to the release/10.0 branch. I don't think the helix-platforms.yml file exists there. Please do not create it.
#121730
The goal after this change is that all Ubuntu container references are using Ubuntu 26.04. Do not change VM references. Those will be handled separately.
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@richlander
Update Ubuntu container references from 25.10 to 26.04
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Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
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[WIP] Update Ubuntu container references to version 26.04Update Ubuntu container references from 25.10 to 26.04Dec 3, 2025
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December 3, 2025 16:06
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Dec 3, 2025

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This change is good to go. All failures are on Android change is Linux-specific.
Note that this change switched Ubuntu testing to 26.04, which is still in preview state. I'm unaware that this has been a problem in main and don't expect it.
I'll do the same with release/8.0-staging and release/9.0-staging but will wait until 2026 for that.
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Dec 3, 2025

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/ba-g "Failures are unrelated, on Android only"
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Pull request overview
This PR backports Ubuntu container version updates from main (PR #121730), updating container image references from Ubuntu 25.10 (which was in preview during initial addition) to Ubuntu 26.04 (currently in preview with official container releases). This is a proactive infrastructure update to align Helix test environments with the current Ubuntu preview release.
  • Updates three container references from Ubuntu 25.10 to 26.04
  • Changes affect only container images (@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-*)
  • VM references remain unchanged as intended
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
FileDescription
eng/pipelines/libraries/helix-queues-setup.ymlUpdates Ubuntu container references for both ARM64 (line 34) and AMD64 (line 67) architectures in library test infrastructure
eng/pipelines/installer/helix-queues-setup.ymlUpdates Ubuntu container reference for ARM64 architecture (line 32) in installer test infrastructure
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December 3, 2025 16:09
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Dec 3, 2025
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Comment threadeng/pipelines/libraries/helix-queues-setup.yml
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Dec 3, 2025
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Dec 3, 2025

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Using tell mode for this.
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@richlanderrichlander
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Update Ubuntu container references from 25.10 to 26.04[release/10.0] Update Ubuntu container references from 25.10 to 26.04Dec 5, 2025
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Dec 9, 2025

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