Fix docker action so that it can run test_version.py

[lauramurgatroyd]

Previously, the docker action skipped running the test_version.py test as this was failing.

[lauramurgatroyd]

I have printed the contents of the folder where the package gets installed and I can see it contains the version.py file, so that is definitely being made.
https://github.com/vais-ral/CILViewer/runs/7655965740?check_suite_focus=true#step:5:16
I was wondering if it was a permissions issue - as that file gets created by the setup.py but in that print, it shows the permissions to be the same as for the other cilviewer files.

I tested creating an environment locally from that environment.yml that the docker uses, and then pip installing and running the tests with pytest and I had no issues.

I don't understand this at all.

[lauramurgatroyd]

The only other thing I can think to do is have this action run after the conda action and install the viewer from the built conda package artifact

[paskino]

It looks like python does not find the file.
My thoughts was "wrong python". However, one can see that the rest of the tests work. Really weird.

[lauramurgatroyd]

I made the action upload the artifact of the docker image, downloaded it, ran locally and the version test failed there too