add scrip to remove old css files

[adenntumba]

Description

Type of Change

• • Bugfix
• • Feature
• • Code style update (formatting, local variables)
• • Refactoring (no functional changes, no api changes)
• • Tests
• • Other

Motivation and Context

Add script in posix shell to remove old files and use in Dockerfile

Summary of Changes

Design Files

• Design File 1

Demonstration

Implementation a posix shell script to manage and remove old files based on unix timestamps since the base image only provides posix shell. The script reads a list of timestamps, calculates which files to remove and manages this list. Modified the Dockerfile to use this script specifically for css files cleanup, providing an solution without additional dependencies.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.03%. Comparing base (711af93) to head (5245e81).
Report is 16 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #205   +/-   ##
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  Coverage   52.03%   52.03%           
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  Files         104      104           
  Lines        2527     2527           
  Branches      601      601           
=======================================
  Hits         1315     1315           
  Misses       1212     1212           

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