I just stumbled across this "Ask HN: What is the actual purpose of Docker?" .

After using Docker more and more over the last months, my answers have gradually changed. It used to be more hype-like, with "immutable infrastructure", "portable" and stuff like that. Now it's more practical, I feel I can say more concretely what our benefits are.

My favorite answer comes down to Docker being a standardized way of deploying and running applications.

The old way of deploying our software was complex with a taste of chaos, then became managed but complicated through the introduction of Puppet (or your configuration management tool of choice).…