gru/docker/files/nginx.conf.j2

server {

  listen 80;
  server_name {{ http_host }};

  location / {
    proxy_set_header Host            $host:$server_port;
    proxy_set_header X-Scheme        $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_pass       http://localhost:{{ host_port }};
  }
}