This container can be pulled via:
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/coredns:1.2
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/coredns:1.2.6
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/coredns:1.2.6-1.30

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.