This container can be pulled via:
  docker pull registry.opensuse.org/virtualization/container/opensuse/tumbleweed/virt-cdi-uploadserver:1.30.0
  docker pull registry.opensuse.org/virtualization/container/opensuse/tumbleweed/virt-cdi-uploadserver:1.30.0.2.323

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.