Any suggestion on which docker image to use during out CI/CD runs? As I can see it needs at least python3.8 and docker installed (when one wants to build docker images).

I have no particular recommendations on images at this time. Perhaps there are other users that want/can share their experiences.. ?

I generally use slim versions for python Although it doesn't come with docker installed. https://pythonspeed.com/articles/base-image-python-docker-images/