This container can be pulled via:
  docker pull registry.opensuse.org/home/nbelouin/factory16/charts/metallb:999.0.1_up0.15.2
  docker pull registry.opensuse.org/home/nbelouin/factory16/charts/metallb:999.0.1_up0.15.2-2.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.