add jupyter notebook to dockerfile

[LunaSare]

so we can read and run ipynb files from examples

[LunaSare]

Also:

• add virtualenv (?)
• preinstall physcraper

[snacktavish]

https://stackoverflow.com/questions/38830610/access-jupyter-notebook-running-on-docker-container

Some useful info here. I think no virtual env required in docker, as it is sort of a virtual environment of it's own!

[LunaSare]

True! you are exactly right! I was trying different things and I forgot that physcraper does not exist on the command line, only in a python interactive session 😅

It is so nice to run physcraper in a docker container 🤩