This container can be pulled via:
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:3.5.12
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:3.5.12-0
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:3.5.12-0.26.50
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:3.5.12-1
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:3.5.12-1.26.50
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/etcd:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.