version: "3"
services:
  traefik:
    image: "traefik:v2.0"
    command:
      - --entrypoints.web.address=:80
      - --providers.docker=true
      - --entrypoints.web-secure.address=:443 #Declares the web-secure entrypoint in Traefik
      # ...
      - --certificatesresolvers.le.acme.email=mygoogleemail@gmail.com
      - --certificatesresolvers.le.acme.storage=/acme.json
      - --certificatesresolvers.le.acme.tlschallenge=true
      # ...
    ports:
      - "80:80"
      - "443:443" #Docker sends requests on port 443 to Traefik on port 443
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"
      - "/home/mylinuxusername/docker/traefik/acme.json:/acme.json"

  whoami:
    image: containous/whoami:v1.3.0
    labels:
      - "traefik.http.routers.my-app.rule=Host(`whoami.subdomain.domain.tld`)"
      - "traefik.http.routers.my-app.tls=true"
      - "traefik.http.routers.my-app.tls.certresolver=le"