This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/cephcsi/csi-snapshotter:v4.0.0
  docker pull registry.opensuse.org/opensuse/cephcsi/csi-snapshotter:v4.0.0-rev1
  docker pull registry.opensuse.org/opensuse/cephcsi/csi-snapshotter:v4.0.0-rev1-build4.755

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.