This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/coredns:1.10.1
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/coredns:1.10.1-4.42

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.