location / {
  
  # Force usage of https
  if ($scheme = http) {
    rewrite ^ https://$server_name$request_uri? permanent;
  }

  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 Host $http_host;
  proxy_set_header X-NginX-Proxy true;

  proxy_pass http://127.0.0.1:__PORT__;
  proxy_redirect off;
  
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
}