location / {
  proxy_pass        http://localhost:__PORT__;
  proxy_redirect    off;
  proxy_set_header  Host $host;
  proxy_set_header  X-Real-IP $remote_addr;
  proxy_set_header  X-Forwarded-Proto $scheme;
  proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header  X-Forwarded-Host $server_name;
  proxy_set_header  X-Forwarded-Port $server_port;
  
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";

  more_set_headers "Access-Control-Allow-Origin: *";

  location = / {
    proxy_intercept_errors on;
    error_page 400 =200 /v2/languages;
    
    proxy_pass        http://localhost:__PORT__;
    proxy_redirect    off;
    proxy_set_header  Host $host;
    proxy_set_header  X-Real-IP $remote_addr;
    proxy_set_header  X-Forwarded-Proto $scheme;
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header  X-Forwarded-Host $server_name;
    proxy_set_header  X-Forwarded-Port $server_port;
    
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";

    more_set_headers "Access-Control-Allow-Origin: *";
  }
}