Can't make it work with multiple ports enabled

[jdutheil]

Hi,

I am using ApiPlatform 2.6, and would like to use your caddy-docker-proxy in order to have multiple subdomaines on my server. I can't find a way to make things working "nicely", ending up with an error 502. My caddy server I want to reach with the reverse proxy is published on port 4431, so basically I need to route all requests goind to mysubdomain.domain.tld to mysubdomain.domain.tld:4431

It works with these labels :

labels:
      caddy: mysubdomain.domain.tld
      caddy.reverse_proxy: https://mysubdomain.domain.tld:4431

But I can't success with {{upstreams}} or such, tryed basically everything but always end up with 502 errors or "too many redirects".

Here is the full container in docker-compose :

caddy:
    build:
      context: api/
      target: api_platform_caddy
    depends_on:
      - php
      - client
    environment:
      SERVER_NAME: mysubdomain.domain.tld
      MERCURE_PUBLISHER_JWT_KEY: ${MERCURE_PUBLISHER_JWT_KEY:-!ChangeMe!}
      MERCURE_SUBSCRIBER_JWT_KEY: ${MERCURE_SUBSCRIBER_JWT_KEY:-!ChangeMe!}
    labels:
      caddy: mysubdomain.domain.tld
      caddy.reverse_proxy: https://mysubdomain.domain.tld:4431
      #caddy.reverse_proxy: "{{upstreams https 4431}}"
    restart: unless-stopped
    volumes:
      - php_socket:/var/run/php
      - caddy_data:/data
      - caddy_config:/config
    ports:
      # HTTP
      - target: 80
        published: 8081
        protocol: tcp
      # HTTPS
      - target: 443
        published: 4431
        protocol: tcp
      # HTTP/3
      - target: 443
        published: 4431
        protocol: udp 
    networks:
      - caddy

Thanks

[francislavoie]

What you're trying doesn't make sense.

• You need to bind to ports 80/443 on the host for Automatic HTTPS to work. See https://caddyserver.com/docs/automatic-https

• You're trying to proxy requests on port 443 (which never reach your container because you bound to port 4431 on the host) to the same domain on port 4431. That looks like you're trying to make it do an infinite loop, you're not actually proxying anything. 🤔 You're meant to proxy to another container.

• I don't see a php-fpm container in your docker-compose.yml. You need PHP somewhere to run your code. You would use the pho_fastcgi directive to proxy to your php-fpm container.

• I assume you're making a custom build since you're using Mercure. What does your Dockerfile look like?