web1: image: web expose: - "81" environment: WEB_PORTS: 81 VIRTUAL_HOST: web1.nginx-proxy.example NETWORK_ACCESS: internal web2: image: web expose: - "82" environment: WEB_PORTS: 82 VIRTUAL_HOST: web2.nginx-proxy.example sut: image: nginxproxy/nginx-proxy:test volumes: - /var/run/docker.sock:/tmp/docker.sock:ro - ./network_internal.conf:/etc/nginx/network_internal.conf:ro