Get CI running on ceda-notebooks repo

[amanning9]

We have a Jupyter Notebooks repository full of notebooks that we have set up:

https://github.com/cedadev/ceda-notebooks

The notebooks can break over time - so we want a Continuous Integration (CI) system that can run through the notebooks and check that they are not producing errors.

We can assume that if all cells in a notebook run without any exceptions being raised then the notebook is good. Mahir started work on this for our ceda-notebooks. Here is an example file that tells GitHub how to set up some environments in the cloud (i.e. on GitHub), and then run the notebooks (lines 43-45) to see if they run successfully:

https://github.com/cedadev/ceda-notebooks/blob/master/.github/workflows/test.yaml

https://github.com/cedadev/ceda-notebooks/actions/runs/4123049436/jobs/7120592411

We need a bit more work on this to get it completed.

Issues to understand/resolve:

• Can it just run in GitHub?
• How can we get it running in GitLab - with access to real data?

xref: https://github.com/cedadev/task-board/issues/11