This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/cr/sle-15-sp3/containerfile/suse/rmt-mariadb:10.5
  docker pull registry.opensuse.org/home/defolos/bci/cr/sle-15-sp3/containerfile/suse/rmt-mariadb:10.5-2.116

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.