This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/containers/charts/metal3:999.0.31_up0.16.0
  docker pull registry.opensuse.org/isv/suse/edge/containers/charts/metal3:999.0.31_up0.16.0-313.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.