Routing directive, Reverse Proxy assets got 400

[francislavoie]

You need to proxy to the port the service uses inside the docker network, not the one you bound to the host machine.

@izulwahidin

  ports:
   - 2222:80
   - 2233:443

Remove these lines, you don’t need to bind this server’s ports to the host if you’re proxying to it with Caddy.

Then in Caddy, do reverse_proxy file:80 (since your container is named file, and it seems to listen on port 80).

@izulwahidin

  volumes:
   - $PWD/Caddyfile:/etc/caddy/Caddyfile
   - $PWD/web:/app/public

Please make sure you persist /data, otherwise you’ll lose Caddy’s certs and keys every time you tear down and restart the container, which can make you hit rate limits, and it’s just wasteful in general.

@izulwahidin

{
  http_port 80
  https_port 443
}

Remove these global options, they’re redundant. Those are already the default HTTP and HTTPS ports.

@izulwahidin

    route /filegator/* {
        uri strip_prefix /filegator/
        reverse_proxy * 172.18.0.1:2233
    }

You can use handle_path instead, which will do the strip_prefix logic for you implicitly.

handle_path /filegator/* {
	reverse_proxy file:80
}

But keep in mind, when proxying a subpath to an upstream app, you can run into trouble if the upstream app isn’t configured to know that it’s supposed to run under a particular path. This article explains:

The "subfolder problem", OR, "why can't I reverse proxy my app into a subfolder?"

Have you ever tried to reverse proxy an app into its own little subfolder of your domain name? Makes things neat, doesn’t it? Using example.com/foo/ for one app, example.com/bar/ for another. If you’re coming here from one of the selfhosted communities, you might be thinking along the lines of example.com/sonarr/, example.com/radarr/ etc. Chances are, you’ve tried some configuration along these lines: example.com { redir /sonarr /sonarr/ handle_path /sonarr/* { reverse_proxy localhost…

Also, I’d suggest to wrap your other part, your PHP app, in a handle so that it’s properly mutually exclusive with your proxy. So altogether:

localhost {
	handle_errors {
		respond "{http.error.status_code} {http.error.status_text}"
	}

	encode gzip

	redir /filegator /filegator/ permanent
	handle_path /filegator/* {
		reverse_proxy file:80
	}

	handle {
		root * /app/public/
		php_fastcgi php:9000
		file_server
	}
}