Document/Add config dump static error pages

[94noni]

👋🏻 i am trying to document / add this feature symfony/symfony#58769
ref symfony/symfony-docs#20706 (comment)

but I am failing getting it:

is something as simple as this would work?

	root /app/public
	encode zstd br gzip

	{$CADDY_SERVER_EXTRA_DIRECTIVES}

+    # dump static error pages via bin/console error:dump public/error_pages --force
+    handle_errors {
+   	rewrite * /error_pages/{err.status_code}.html
+       file_server
+    }

	@phpRoute {
		not file {path}
	}
	rewrite @phpRoute index.php

	@frontController path index.php
	php @frontController

	file_server {
		hide *.php
	}

[maxhelias]

Yes, that should work, but the correct variable is: http.error.status_code. I think you can simplify this and add a fallback to detect any error code like this:

handle_errors {
	try_files /error_pages/{http.error.status_code}.html /error_pages/500.html
	file_server
}

I think the configuration block could be added to the Symfony documentation here: https://symfony.com/doc/current/controller/error_pages.html#dumping-error-pages-as-static-html-files

[maxhelias]

And if you want specify each error, one by one :

handle_errors {
	@404 expression {http.error.status_code} == 404
	@500 expression {http.error.status_code} == 500
	@503 expression {	http.error.status_code} == 503
	
	rewrite @404 /error_pages/404.html
	rewrite @500 /error_pages/500.html
	rewrite @503 /error_pages/503.html
	
	file_server
}

[94noni]

@maxhelias I thank you for the comments, I will test it and of course document it accordingly on symfony doc
(just dont close issue in the meantime)