This container can be pulled via:
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container/opensuse/tumbleweed:20190327
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container/opensuse/tumbleweed:20190327.29.13
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container/opensuse/tumbleweed:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.