This container can be pulled via:
  docker pull registry.opensuse.org/devel/caasp/kubic-container/container/kubic/heapster:1.4
  docker pull registry.opensuse.org/devel/caasp/kubic-container/container/kubic/heapster:1.4.3
  docker pull registry.opensuse.org/devel/caasp/kubic-container/container/kubic/heapster:1.4.3-8.42

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.