This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/hello-kubic:1.4.1
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/hello-kubic:1.4.1-4.40
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/kubic/hello-kubic:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.