docker-compose.yml

version: '2'
services:
  caddy:
    image: caddy:2.4.6
    command: caddy run --watch --config /etc/caddy/Caddyfile
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - caddy-conf:/etc/caddy:ro
      - caddy-data:/data/caddy
    labels:
      # in this example, this label is not important, but if you would have different networks
      # for different containers, this annotation helps docker-gen see "from where" it needs to "see"
      # the upstream container and thus can determine which network and port to use.
      - "docker-gen.target"

  dockergen:
    image: nginxproxy/docker-gen
    command: -watch /etc/docker-gen/templates/caddy.tmpl /etc/caddy/Caddyfile
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - ./Caddyfile.tmpl:/etc/docker-gen/templates/caddy.tmpl
      - caddy-conf:/etc/caddy

  whoami:
    image: jwilder/whoami
    labels:
      - "virtual.host=test2.test *.test2.test *.*.test2.test"
      - "virtual.tls=internal"

volumes:
  caddy-conf:
  caddy-data: