This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/cosign:3
  docker pull registry.opensuse.org/opensuse/cosign:3.0
  docker pull registry.opensuse.org/opensuse/cosign:3.0.5
  docker pull registry.opensuse.org/opensuse/cosign:3.0.5-19.145
  docker pull registry.opensuse.org/opensuse/cosign:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.