code: def get_internal_registry_ip():
      
      with conu.backend.origin.backend.OpenshiftBackend() as origin_backend:
          services = origin_backend.list_services()
          for service in services:
              if service.name == 'docker-registry':
                  logger.debug("Internal docker-registry IP: %s",
                               "{ip}:{port}".format(ip=service.get_ip(), port=INTERNAL_REGISTRY_PORT))
                  return "{ip}:{port}".format(ip=service.get_ip(), port=INTERNAL_REGISTRY_PORT)
      return None
docs: Search for `docker-registry` IP
      :return: str, ip address