zammad-docker-compose/.examples/proxy/docker-compose.yml

---
version: '2'

services:
  frontend:
    image: jwilder/nginx-proxy:alpine
    restart: always
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./certs:/etc/nginx/certs
      - /var/run/docker.sock:/tmp/docker.sock:ro
    networks:
      - 2_apps

networks:
  2_apps: