[redgc]

As it sounds like it's running inside Docker itself, I'd like to know if this supports "Docker in Docker". My requirement is not strictly DinD however I run multiple containers during CI (Postgres, node, test containers, etc). Possible via different approaches in CircleCI, Shippable and SemaphoreCI. I don't actually build any containers to save.

[ethangj]

This is actually how Codeship's Docker infrastructure works by default, builds up containers and executes all commands in them natively. DinD still possibly but somewhat yet useful with that approach.