version: '3'

services:
  #The reverse proxy service (Træfik)
  reverse-proxy:
    image: traefik #The official Traefik docker image
    command: --api --docker #Enables the web UI and tells Træfik to listen to docker
    ports:
      - "80:80"     #The HTTP port
      - "8080:8080" #The Web UI (enabled by --api)
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock #So that Traefik can listen to the Docker events

  #A container that exposes a simple API
  whoami:
    image: emilevauge/whoami #A container that exposes an API to show it's IP address
    labels:
      - "traefik.frontend.rule=Host:whoami.docker.localhost"