Hi Albertotono,
as I mentioned, if you are not a regular Docker user, you might be better off with Paperspace or Google Colab, which are probably easier to set up. The prime goal should be focus on getting as much out of the course as possible. (There’s always time to learn Docker 
)
That being said, on the container page, the instructions that should get you up and running are available in the description: https://hub.docker.com/u/zerotosingularity/fastai2
In brief summary:
- Install Docker
- Install nvidia-docker
- start the container
I haven’t created a special tutorial, as the instructions vary per platform, and you don’t need to do any other that following those.
Hope that helps, if not, I’m around 