| > Docker does NOT replace configuration management tools You're right, for now, but hopefully not forever. Docker, the company, has got an insane valuation, so is monetize anything and everything in sight to validate that valuation. But trying to give away tools to developers is an uphill battle on a good day, never mind selling to developers. So Docker is pursuing the end of the market that's likely to pay off - the data center, and that's why there's such a huge push behind putting Docker into production. Now, my experience with current CM tools is that it's still easier to boot a VM and tinker with it to get it working 'normally' (ie, bash + editing config files directly), and then throw that VM away and play with my chosen CM tool to get it working there instead. Dockerfiles do a good job of bridging that divide, out of the box. On a fresh machine, I install the base OS, and then install docker, and I'm up and running Dockerfiles, albiet with a cold (docker build) cache. Hopefully the next generation of CM tools can blend the both so setting up a local target is easy as 'docker build' and ongoing maintenance of deployed machines is as easy as 'puppet agent --onetime'. |