This container can be pulled via:
  docker pull registry.opensuse.org/home/ldevulder/branches/uc-riscv64/containers/release-manifest:0-4.1
  docker pull registry.opensuse.org/home/ldevulder/branches/uc-riscv64/containers/release-manifest:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.