This container can be pulled via:
  docker pull registry.opensuse.org/home/favogt/fixedarch/container_zsystems/opensuse/tumbleweed:20210505
  docker pull registry.opensuse.org/home/favogt/fixedarch/container_zsystems/opensuse/tumbleweed:20210505.54.57
  docker pull registry.opensuse.org/home/favogt/fixedarch/container_zsystems/opensuse/tumbleweed:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.