This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/3.6/totest/charts/metallb:306.0.2_up0.15.3
  docker pull registry.opensuse.org/isv/suse/edge/3.6/totest/charts/metallb:306.0.2_up0.15.3-2.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.