This container can be pulled via:
  docker pull registry.opensuse.org/home/cobbler-project/github-ci/suma-43/containers/cobbler-test-github:latest
  docker pull registry.opensuse.org/home/cobbler-project/github-ci/suma-43/containers/cobbler-test-github:suma-43
  docker pull registry.opensuse.org/home/cobbler-project/github-ci/suma-43/containers/cobbler-test-github:suma-43.1.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.