Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145

Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom
Ronitsabhaya75:buildkit-bug
Closed

Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom
Ronitsabhaya75:buildkit-bug

Conversation

@Ronitsabhaya75

@Ronitsabhaya75Ronitsabhaya75 commented Feb 3, 2026

Copy link
Copy Markdown
Contributor

Type of Change

  • Bug fix
  • New feature
  • Breaking change
  • Documentation update

Motivation and Context

Fix#1143

BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.

Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.

The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.

letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]

Testing

  • Tested locally
  • Added/updated tests
  • Added/updated docs

@Ronitsabhaya75Ronitsabhaya75 mentioned this pull request Feb 4, 2026
Merged
7 tasks
@Ronitsabhaya75
Ronitsabhaya75 deleted the buildkit-bug branch March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive

1 participant

@Ronitsabhaya75
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, '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
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, '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
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, '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
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75

, '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
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files - #1145
Closed
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Closed
Fix #1143: Add content hash to build context metadata to prevent BuildKit from caching stale files#1145
Ronitsabhaya75 wants to merge 1 commit into
apple:mainfrom 
Ronitsabhaya75:buildkit-bug
Conversation
@Ronitsabhaya75
@Ronitsabhaya75Ronitsabhaya75
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
Type of Change
  •  Bug fix
  •  New feature
  •  Breaking change
  •  Documentation update
Motivation and Context
Fix#1143
BuildKit container caches build context after the first build and doesn't invalidate when files change, causing subsequent builds to use stale files.
Root Cause: BuildKit's cache key doesn't account for file content changes. BuildFSSync sends updated tar archives, but BuildKit reuses the cached context.
The fix: Add SHA256 hash of build context (file paths + sizes + modTimes) to tar metadata, forcing BuildKit cache invalidation when files change.
letcontextHash=trycomputeContextHash(fileOrder: fileOrder, contextDir: contextDir)metadata:["os":"linux","stage":"fssync","mode":"tar","context_hash": contextHash,]
Testing
  •  Tested locally
  •  Added/updated tests
  •  Added/updated docs
@Ronitsabhaya75Ronitsabhaya75
mentioned this pull request
Feb 4, 2026
 Merged

7 tasks
@Ronitsabhaya75
Ronitsabhaya75
deleted the

buildkit-bug

branch
March 27, 2026 14:44
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Bug]: buildkit container loose sync when tgz archive


1 participant

@Ronitsabhaya75