feature: Better handling of missing environment variables in setupProxy.js file

[arturowczarek]

Problem

At some point (August 2024) setupProxy.js started using WEB_PORT. The related docker compose configuration files not always have it updated. Without this variable set, the containers start but listen on undefined port. The users can't use the stack and are confused why. Here's an example of a fix of this king of problem OpenLineage/OpenLineage#3192

Solution

When some important environment variable is missing the application should stop and the user should stay informed about that they should do next.

One-line summary:

Checklist

• You've signed-off your work
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• You've included a one-line summary of your change for the CHANGELOG.md (Depending on the change, this may not be necessary).
• You've versioned your .sql database schema migration according to Flyway's naming convention (if relevant)
• You've included a header in any source code files (if relevant)

[boring-cyborg]

Thanks for opening your first pull request in the Marquez project! Please check out our contributing guidelines (https://github.com/MarquezProject/marquez/blob/main/CONTRIBUTING.md).

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.19%. Comparing base (9e2e9b4) to head (d051529).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #2956   +/-   ##
=========================================
  Coverage     81.19%   81.19%           
  Complexity     1505     1505           
=========================================
  Files           268      268           
  Lines          7358     7358           
  Branches        325      325           
=========================================
  Hits           5974     5974           
  Misses         1226     1226           
  Partials        158      158           

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[wslulciuc]

Thanks for the quick fix, @arturowczarek! 💯 💯 🥇

[boring-cyborg]

Great job! Congrats on your first merged pull request in the Marquez project!