This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/kiwibuilder/images_6.0/kiwi-builder:10.1.16.0
  docker pull registry.opensuse.org/isv/suse/edge/kiwibuilder/images_6.0/kiwi-builder:10.1.16.0-23.1
  docker pull registry.opensuse.org/isv/suse/edge/kiwibuilder/images_6.0/kiwi-builder:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.