Removed entrypoint python3 alias to accomodate Linux / Ubuntu installation

[tbg-delegate]

This removal should fix an error arising on Ubuntu / Linux, when spetlr is installed / uninstalled.

What type of PR is this? (check all applicable)

• Bug Fix

Description

Currently, deploying spetlr in a python Docker image yields an error with "too many levels of symbolic links" which usually implies that python3 symbol is misused.

The bug also implies that whenever spetlr is installed and subsequently uninstalled on Linux, python3/python disappears from the terminal, as the command python3 is removed with spetlr.

This PR may incur some unexpected development errors on Windows machines (according to @mrmasterplan), but we shall see :)

[LauJohansson]

I will wait for the tests to succeed before reviewing

[tbg-delegate]

I will wait for the tests to succeed before reviewing

Check. @LauJohansson: I went on paternity leave on Monday, so will not be able to push this much further for now, which is quite annoying. Given that I only changed a really small thing, I honestly have no idea why the tests are failing.

The logs give several errors, but specifically this: pyspark.errors.exceptions.base.PySparkRuntimeError: [PYTHON_VERSION_MISMATCH] Python in worker has different version (3, 10) than that in driver 3.8, PySpark cannot run with different minor versions.

I believe activating a virtual environment inside the test workflow would be the proper way to handle this, but it's hard to know without spending a bit of time into the problem.

[tbg-delegate]

@mrmasterplan
Update on this, after my paternity leave: This is still a problem, and blocks using spetlr in my current project employment. I would like another deployment to parse through logs, and try out a few fixes.