This container can be pulled via:
  docker pull registry.opensuse.org/filesystems/ceph/pacific/images/cephcsi/csi-attacher:v2.1.0
  docker pull registry.opensuse.org/filesystems/ceph/pacific/images/cephcsi/csi-attacher:v2.1.0-rev1
  docker pull registry.opensuse.org/filesystems/ceph/pacific/images/cephcsi/csi-attacher:v2.1.0-rev1-build2.124

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.