Use bin/setup in devcontainer and move to port 3100 for dev.

[plural]

Making this change to the suggested environment in the docs and in the devcontainer setup to avoid collisions with Cobra.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.42%. Comparing base (e0aceaa) to head (eb56393).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #398   +/-   ##
=======================================
  Coverage   98.42%   98.42%           
=======================================
  Files          76       76           
  Lines        1332     1332           
  Branches      178      178           
=======================================
  Hits         1311     1311           
  Misses         21       21           

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