dockerfiles/unmaintained/reverse/rootfs/nginx/conf.d/proxy.conf

  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;
  proxy_set_header X-Remote-Port $remote_port;
  proxy_redirect off;
  proxy_set_header Proxy "";
  proxy_pass_header Server;