> Example: I usually want to use the python:3-slim image, but this doesn't have the tools to compile certain python libraries with C extensions. Generally I wil

> Example: I usually want to use the python:3-slim image, but this doesn't have the tools to compile certain python libraries with C extensions. Generally I will use the python:3 image for my build stage to do my "pip install -r requirements.txt" and then copy the libraries over to my final stage based on the python:3-slim image Example on how to do that, please.