Docker containers.

Appreciate that the Osmocom Docker configurations exist principally for automated testing and here it may not make sense, but I wondered if builds are published to a registry? The Makefile in the make project located in the docker-playground repo sets docker.io as registry and has a target for docker push. Also see OBS Release.key files in project sub-directories, but couldn't find container builds being published anywhere. Was hoping I could just pull containers for the latest project versions, without cloning and building the containers in docker-playground. Also saw the comments from 2017 on Docker shortcomings and assuming SCTP works OK now in Docker networking? Regards, Andrew