This container can be pulled via:
  docker pull registry.opensuse.org/home/nbelouin/factorybmotest/images/upgrade-controller:0.1.1
  docker pull registry.opensuse.org/home/nbelouin/factorybmotest/images/upgrade-controller:0.1.1-2.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.