This container can be pulled via:
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/xorg-client:21
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/xorg-client:21-1.1
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/xorg-client:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.