This container can be pulled via:
  docker pull registry.opensuse.org/home/favogt/releasetest/containers/containers/opensuse/tumbleweed:20210225
  docker pull registry.opensuse.org/home/favogt/releasetest/containers/containers/opensuse/tumbleweed:20210225.52.163

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.