This container can be pulled via:
  docker pull registry.opensuse.org/home/nbelouin/factorytesting/charts/upgrade-controller-chart:999.0.0_up0.1.1
  docker pull registry.opensuse.org/home/nbelouin/factorytesting/charts/upgrade-controller-chart:999.0.0_up0.1.1-1.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.