Abstract targets in ci:build:compose workflow

[make-github-pseudonymous-again]

Fixes #898.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.48%. Comparing base (9574a14) to head (3e56222).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #902      +/-   ##
==========================================
+ Coverage   64.46%   64.48%   +0.02%     
==========================================
  Files         703      703              
  Lines        9705     9705              
  Branches     1335     1335              
==========================================
+ Hits         6256     6258       +2     
+ Misses       3004     3003       -1     
+ Partials      445      444       -1     

Flag	Coverage Δ
test	69.80% <ø> (+0.03%)	⬆️
test-app	53.75% <ø> (ø)

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