I've been several docker components heavily, on a real system. This was the state of play just prior to the Docker 1.6 announcement: - Docker registry, the old

I've been several docker components heavily, on a real system. This was the state of play just prior to the Docker 1.6 announcement: - Docker registry, the old pre-2.0 version: I hate it. It's incredibly slow, and it raises lots of errors. - Docker 1.5: Mostly stable and usable if you're on the right kernel, occasionally does something weird. - docker-machine (from git): Very nice for provisioning basic docker hosts locally or on AWS. Nice feature: it's capable of automatically regenerating TLS certificates when Elastic IP addresses get remapped. - docker-compose 1.1.0: Kind of a toy, but a fun toy, and it generally did what it advertised. - docker swarm: With docker-compose 1.1.0 and docker 1.5, it was pretty much unusable. Simply running "docker-compose up -d" twice in a row was enough to make it fail with random errors. I'm going to re-evaluate swarm with docker 1.6 and the new docker-compose.