nginx-proxy/test/test_server-down/test_load-balancing.yml

web1:
  image: web
  expose:
    - "81"
  environment:
    WEB_PORTS: 81
    VIRTUAL_HOST: web.nginx-proxy.tld

web2:
  image: web
  expose:
    - "82"
  environment:
    WEB_PORTS: 83
    VIRTUAL_HOST: web.nginx-proxy.tld

web3:
  image: web
  expose:
    - "83"
  environment:
    WEB_PORTS: 83
    VIRTUAL_HOST: web.nginx-proxy.tld
  net: "none"

sut:
  image: nginxproxy/nginx-proxy:test
  volumes:
    - /var/run/docker.sock:/tmp/docker.sock:ro