Set up .dockerignore file

[agriyakhetarpal]

Description

Related to #3312

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ python run-tests.py --quick (or $ nox -s quick).

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (774d56d) 99.58% compared to head (2ab9ca0) 99.58%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3433   +/-   ##
========================================
  Coverage    99.58%   99.58%           
========================================
  Files          256      256           
  Lines        19998    19998           
========================================
  Hits         19915    19915           
  Misses          83       83           

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[arjxn-py]

Thanks @agriyakhetarpal, the file looks good but it might not control those unwanted files and folders inside the container as those are being generated while building the image, we would want to use commands to manage those files.
As far as I know .dockerignore is used to define the build context and that is already being handeled by .gitignore only as we are not copying the context but cloning from git here.

[agriyakhetarpal]

Oh okay, I added this because I saw some of these files showing up in the Docker containers earlier, but I think they have been fixed in the latest image because they don't show up now. Cloning from the Git repository looks like a cleaner method, didn't notice that! Happy to close this if you think so

[arjxn-py]

fixed in the latest image because they don't show up now.

If the issue has been fixed in latest image then yeah we can close it and if not we can try fixing it with adding some commands in Dockerfile.

[agriyakhetarpal]

If the issue has been fixed in latest image then yeah we can close it and if not we can try fixing it with adding some commands in Dockerfile.

Just pulled and tested—closing, thanks, @arjxn-py!