Starting off
... with some nice YouTube movies is always good.
Our friend Patrick has made a bunch of nice videos:
Introduction:
https://www.youtube.com/watch?v=bi0cKgmRuiA
How to create a great dev environment with Docker:
https://www.youtube.com/watch?v=0H2miBK_gAk&t=465s+
Build a Machine Learning App From Scratch with Flask & Docker:
https://www.youtube.com/watch?v=S--SD4QbGps