This container can be pulled via:
  docker pull registry.opensuse.org/home/tbechtold/openstack-containers/test-with-kiwi-profiles/images-opensuse_tumbleweed/opensuse/memcached:1.5.17
  docker pull registry.opensuse.org/home/tbechtold/openstack-containers/test-with-kiwi-profiles/images-opensuse_tumbleweed/opensuse/memcached:1.5.17-2.1
  docker pull registry.opensuse.org/home/tbechtold/openstack-containers/test-with-kiwi-profiles/images-opensuse_tumbleweed/opensuse/memcached:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.