This container can be pulled via:
  docker pull registry.opensuse.org/home/fcrozat/branches/opensuse/templates/images/tumbleweed/containers/suse/alp/workloads/gdm:0.3
  docker pull registry.opensuse.org/home/fcrozat/branches/opensuse/templates/images/tumbleweed/containers/suse/alp/workloads/gdm:0.3-132.1
  docker pull registry.opensuse.org/home/fcrozat/branches/opensuse/templates/images/tumbleweed/containers/suse/alp/workloads/gdm:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.