Comment by Perceptes

I wish this had gone into some more technical detail about what "CNB" does that is actually better. Most of the article was just rehashing some problems with Dockerfiles, but the conclusion is just "CNB fixes it!" The one specific improvement they mention is being able to "rebase" an image without rebuilding the whole thing, which certainly sounds interesting, but is not explained. How does it work? What else is CNB other than a wrapper around `docker build`?