How to well-known redirect with pound reverse Proxy

Because there is no example i wil share my working configuration for the well-known carddav/caldav with the pound reverse proxy. Nextcloud is running on domain.de/cloud

   # Service Discovery Calendar/Contacts for Nextcloud
   Service
      URL "/.well-known/caldav"
      HeadRequire "Host:? (domain.de).*"
      Redirect 301 "https://domain.de/cloud/remote.php/dav/"
   End
   Service
      URL "/.well-known/carddav"
      HeadRequire "Host:? (domain.de).*"
      Redirect 301 "https://domain.de/cloud/remote.php/dav/"
   End