I'm curious why you're being downvoted for this. Whoever disagrees, please share some context. What you said about "wrapping" I interpret as: based on an image

I'm curious why you're being downvoted for this. Whoever disagrees, please share some context. What you said about "wrapping" I interpret as: based on an image for instance with OS level dependencies you create another image with application level artifacts, e.g. a python application. When your app changes, you don't build the base image again, you only build the app image. This makes sense to me.