There isn't too much of a downside, except that you need to be a little more careful in your CI, otherwise you can end up rebuilding from scratch each time, thu

There isn't too much of a downside, except that you need to be a little more careful in your CI, otherwise you can end up rebuilding from scratch each time, thus losing the benefit of faster builds. See here for why and how to fix it: https://pythonspeed.com/articles/faster-multi-stage-builds/ https://pythonspeed.com/articles/faster-multi-stage-builds/