[ownagefool]

As does my packer + puppet repo.

The point was, start with docker, get that for mostly free. You can feel free to further manage the underlying hosts with chef, puppet, or ansible, but docker will make the systems interface to your app quite a bit neater and you'll still chef to configure the app.

Your CM now does less, which is a good thing.

Throw in mesos or kubernetes because your CM isn't really amazingly helpful at deciding where things should run and your CM will now do even less.

That doesn't mean your CM will definitely go in the bin, but if all it's doing is changing a couple of system settings during an image build, it arguably could be bash, though I personally would rather it wasn't.