nginx-proxy/docker-compose.yml

services:
  nginx-proxy:
    image: nginxproxy/nginx-proxy
    container_name: nginx-proxy
    ports:
      - "80:80"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro

    # if you want to proxy based on host ports, you'll want to use the host network
    # network_mode: "host"

  whoami:
    image: jwilder/whoami
    environment:
      - VIRTUAL_HOST=whoami.example