This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/xorg-client:21
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/xorg-client:21-1.3
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/xorg-client:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.