This container can be pulled via:
  docker pull registry.opensuse.org/home/czerw/branches/opensuse/templates/images/tumbleweed/containers/opensuse/kirk:1.0
  docker pull registry.opensuse.org/home/czerw/branches/opensuse/templates/images/tumbleweed/containers/opensuse/kirk:1.0.13.1
  docker pull registry.opensuse.org/home/czerw/branches/opensuse/templates/images/tumbleweed/containers/opensuse/kirk:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.