This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/factory/totest/images/akri-debug-echo-discovery-handler:v0.12.20
  docker pull registry.opensuse.org/isv/suse/edge/factory/totest/images/akri-debug-echo-discovery-handler:v0.12.20-26.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.