MAINT: Delete the apt-get lists after installing packages

[MaxJPRey]

Cleaning up the apt cache and removing /var/lib/apt/lists helps keep the image size down. Since the RUN statement starts with apt-get update, the package cache will always be refreshed prior to apt-get install.

Clean up must be performed in the same RUN step, otherwise it will affect image size.

[RobPasMue]

LGTM!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.85%. Comparing base (fb2512b) to head (1b0f8c9).

❗ Current head 1b0f8c9 differs from pull request most recent head 49546e9

Please upload reports for the commit 49546e9 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #750      +/-   ##
==========================================
- Coverage   81.63%   80.85%   -0.78%     
==========================================
  Files          32       32              
  Lines        1982     1980       -2     
==========================================
- Hits         1618     1601      -17     
- Misses        364      379      +15     

[dipinknair]

@MaxJPRey . I think this is added to reduce the image size. Pinging @samigithub2022 for review.

[RobPasMue]

@dipinknair - @MaxJPRey's change will precisely do that, reduce the image size