This container can be pulled via:
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/flannel:0.24.2
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/flannel:0.24.2-31.191
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/flannel:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.