This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/factory/totest/images/kiwi-builder:10.1.16.0
  docker pull registry.opensuse.org/isv/suse/edge/factory/totest/images/kiwi-builder:10.1.16.0-26.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.