This container can be pulled via:
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container_powerpc/opensuse/tumbleweed-dnf:20210622
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container_powerpc/opensuse/tumbleweed-dnf:20210622.3.71
  docker pull registry.opensuse.org/virtualization/containers/images/opensuse-tumbleweed/container_powerpc/opensuse/tumbleweed-dnf:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.