This container can be pulled via:
  docker pull registry.opensuse.org/home/nbelouin/factorybuild/charts/upgrade-controller:999.0.4_up0.1.3
  docker pull registry.opensuse.org/home/nbelouin/factorybuild/charts/upgrade-controller:999.0.4_up0.1.3-1.3

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.