Docker updating image along when dockerfile changes

Question

I\'m playing with docker by creating a Dockerfile with some nodejs instructions. Right now, every time I make changes to the dockerfile I recreate the image by runn

Answer 1

Docker build support caching as long as there is no ADD instruction. If you are actively developing and changing files, only what is after the ADD will be rebuilt.

Since 0.6.2 (scheduled today), you can do docker build --rm . and it will remove the temporary containers. It will keep the images though.

In order to remove the orphan images, you can check them out with docker images, and perform a docker rmi on one of them. As of now, there is an auto-prune and all untagged images (orphans, previous builds) will be removed.