I am setting up a local Debian server with Docker and multiple containers/services. I am trying to point a subdomain to each container with Traefik, it doesn’t work and I don’t know where the problem is.

I have created traefik and test-only containers following this guide, but I get gateway timeout when I call curl foo.myserver.local (see source code below).

# foo/docker-compose.yml
services:
  foo:
    image: httpd:alpine
    container_name: foo
    ports:
      - '9999:80'
    volumes:
      - ./website:/usr/local/apache2/htdocs

    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.cal.rule=Host(`foo.myserver.local`)"
      - "traefik.http.routers.cal.entrypoints=web"
      - "traefik.http.services.cal.loadbalancer.server.port=9999"

Foo website:

# foo/website/index.html
Foo page

Traefik container:

# traefik/docker-compose.yml
services:
  traefik:
    image: traefik:v2.0
    container_name: traefik
    command:
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"
    restart: unless-stopped
    ports:
      - "80:80"
      - "8080:8080"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

Hosts file:

# /etc/hosts

127.0.0.1       localhost
192.168.3.17   myserver.local      myserver
192.168.3.17   foo.myserver.local  myserver


# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Some tests:

user@myserver:~$ curl myserver.local
404 page not found

user@myserver:~$ curl foo.myserver.local
Gateway Timeout

user@myserver:~$ curl 192.168.3.17
404 page not found

user@myserver:~$ curl 192.168.3.17:9999
Foo page

user@myserver:~$ curl localhost
404 page not found

user@myserver:~$ curl localhost:9999
Foo page