update dockerfile to render jupyter notebook equations

[m-julian]

Hello,

This pr should address the issue where the equations in jupter notebooks were not being rendered correctly in issue #2757 .

[george-gca]

Thanks for finding a fix for this. Can you test it with python3-pip package instead of pipx, and installing the packages with it? pipx relies on pip (and venv), so using only pip is better.

[m-julian]

Hi @george-gca, I've tested it on my end with pip and it works. I did have to add the --break-system-packages option because otherwise it does not allow installation of packages without making a virtual environment https://peps.python.org/pep-0668/.