It may well be common knowledge now. I discovered it when writing our Dockerfiles earlier this year and before that hadn't seen it. It looks like multi-stage bu

It may well be common knowledge now. I discovered it when writing our Dockerfiles earlier this year and before that hadn't seen it. It looks like multi-stage builds were added to the best practices in 2018 [https://github.com/docker/docker.github.io/blob/master/develop/develop-images/multistage-build.md https://github.com/docker/docker.github.io/blob/master/devel...] which is probably why I missed it before