This container can be pulled via:
  docker pull registry.opensuse.org/home/kukuk/soft-reboot/containerfile/hello-world:0.1.0
  docker pull registry.opensuse.org/home/kukuk/soft-reboot/containerfile/hello-world:0.1.0-5.42
  docker pull registry.opensuse.org/home/kukuk/soft-reboot/containerfile/hello-world:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.