The following issues were observed:
- warning about non-writable directory which was set as IPYTHONDIR env var
  Not very surprising, it's a directory that lives in container space...
- stale kernels
  I didn't investigate that one properly. It had something to do with bending
  around all Jupyter/IPython relevant directories to custom set directories
  in the image. Reason for doing that is potential Python modules that reside
  in user home of the host that get imported in the container. I removed the
  bending around with the full knowledge that the described problem may occur.
- version updates
  Some changes related to different Python versions between old base image
  (Ubuntu 20.04) and the new one (Ubuntu 22.04).