This container can be pulled via:
  docker pull registry.opensuse.org/suse/alp/workloads/tumbleweed_containerfiles/suse/alp/workloads/gdm:0.3
  docker pull registry.opensuse.org/suse/alp/workloads/tumbleweed_containerfiles/suse/alp/workloads/gdm:0.3-13.340
  docker pull registry.opensuse.org/suse/alp/workloads/tumbleweed_containerfiles/suse/alp/workloads/gdm:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.