This container can be pulled via:
  docker pull registry.opensuse.org/home/adamm/branches/server/dns/container/opensuse/opendkim:2.11.0
  docker pull registry.opensuse.org/home/adamm/branches/server/dns/container/opensuse/opendkim:2.11.0-9.14
  docker pull registry.opensuse.org/home/adamm/branches/server/dns/container/opensuse/opendkim:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.