You hit the nail on the head. That is a major promise of Docker, and the reason we are emphasizing Dockerfiles so much. It makes the act of building your code 1

You hit the nail on the head. That is a major promise of Docker, and the reason we are emphasizing Dockerfiles so much. It makes the act of building your code 100% automated and discoverable, and the resulting build should be usable, unchanged, all the way from development to production.