Update Nginx configuration to replace $http_host with $host$is_request_port$request_port for better compatibility

[nemchik]

Requires: #622

Needs alpine 3.24 rebase for nginx 1.29.3 or higher (alpine 3.24 has nginx 1.30.3)

First commit switched from $http_host to $host:$server_port but this breaks when standard ports (80/443) are used.

From FonduemangVI on Discord

empty: HTTP/3. QUIC/h3 requests carry :authority instead of a Host header, and nginx's $http_host (raw header) can come back empty on h3 connections — known nginx QUIC behaviour. $host is the safe variable (falls back to :authority/server_name).

This misses the need for handling non-standard ports (ex: 8443) for the users that do that.

nginx has some variables to solve it though:

• https://nginx.org/en/docs/http/ngx_http_core_module.html#var_is_request_port
• https://nginx.org/en/docs/http/ngx_http_core_module.html#var_request_port

$host$is_request_port$request_port is the current recommended solution.

I do not run proxy auth currently, so I have not tested those changes.

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit a393925 :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-140fa390-dev-a393925f4495479e40f6e1a18cde0ff9455b9133-pr-620

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit 69afc4d :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-140fa390-dev-69afc4de5860151d25d568c515367bd916ba07f0-pr-620

[Copilot]

Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit a2509cc :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-140fa390-dev-a2509cc44ea3cbbaf010771adf900fdd5c9b1504-pr-620

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit 6aa9d29 :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-2c427b14-dev-6aa9d294d77b516cbb56947294d93cb57cd045d9-pr-620

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit 0150bc7 :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-3f36cd44-dev-0150bc76d377aaa8c238eebce3577cde68c47d2c-pr-620

[LinuxServer-CI]

I am a bot, here is the pushed image/manifest for this PR for commit aa0d432 :

ghcr.io/linuxserver/lspipepr-swag:5.7.0-pkg-145be6ff-dev-aa0d432ef2701db0d9369cb84eb37fc02b186774-pr-620