nginx-proxy/test/test_ssl/test_wildcard.yml

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

sut:
  image: nginxproxy/nginx-proxy:test
  volumes:
    - /var/run/docker.sock:/tmp/docker.sock:ro
    - ../lib/ssl/dhparam.pem:/etc/nginx/dhparam/dhparam.pem:ro
    - ./certs:/etc/nginx/certs:ro