I really don't understand why an organization would want to use Docker (besides buzzword compliance) if they were planning on mutating running containers. What's the advantage?
We originally tried the docker module in Ansible but found it had a few problems. There's been a lot of work on it since, and I expect it will be in a much better state when Ansible 2.0 is released.
- Long-running processes where they don't want to destroy and redeploy every single time a fix or change gets deployed
- One is where they try to reduce the configuration sprawl by making configuration changes at runtime using something like ansible
- One is straight-up bigco stupidity (we must have a way to change the running configuration of a system because the audit team says so)
- separation of responsibilities - we have one team that builds "approved" docker images, and then dev teams can make changes based on that - it might be easier to deploy changes at launch time
Again, I'm not saying all of these make sense, but back when I was workign on docker strategy and interviewing really big companies, these are the types of concerns they had about implementing docker at scale.
Maybe that's not standard with Docker specifically.