old_contents: '''
  This file is the WSGI entrypoint for remote / production use.
  
  If you are using Gunicorn, for example:
  gunicorn etiquette_flask_entrypoint:site --bind "0.0.0.0:PORT" --access-logfile "-"
  '''
  import werkzeug.contrib.fixers
  
  import backend
  
  backend.site.wsgi_app = werkzeug.contrib.fixers.ProxyFix(backend.site.wsgi_app)
  
  site = backend.site
  
new_contents: '''
  This file is the WSGI entrypoint for remote / production use.
  
  If you are using Gunicorn, for example:
  gunicorn etiquette_flask_entrypoint:site --bind "0.0.0.0:PORT" --access-logfile "-"
  '''
  import werkzeug.middleware.proxy_fix
  
  import backend
  
  backend.site.wsgi_app = werkzeug.middleware.proxy_fix.ProxyFix(backend.site.wsgi_app)
  
  site = backend.site
  
subject: Replace werkzeug.contrib with werkzeug.middleware proxyfix.