refactor: update dockerfile to use more readable formatting

[ryankanno]

• Adjusted indentation and spacing for better readability
• Used uppercase for Dockerfile stages (e.g., FROM base AS final)
• Grouped related ENV variables together for clarity
• Adjusted line wrapping for better readability

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.77%. Comparing base (a4c9538) to head (b9ee1c4).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #437   +/-   ##
=======================================
  Coverage   44.77%   44.77%           
=======================================
  Files           2        2           
  Lines          67       67           
  Branches       22       22           
=======================================
  Hits           30       30           
  Misses         35       35           
  Partials        2        2           

Flag	Coverage Δ
py310	44.77% <ø> (ø)
py311	44.77% <ø> (ø)
py39	44.77% <ø> (ø)

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