This container can be pulled via:
  docker pull registry.opensuse.org/home/nbelouin/containers/akri-opcua-discovery-handler:0.12.20
  docker pull registry.opensuse.org/home/nbelouin/containers/akri-opcua-discovery-handler:0.12.20.1.100
  docker pull registry.opensuse.org/home/nbelouin/containers/akri-opcua-discovery-handler:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.