✨ Added config to specify custom adapter install location

[acburdine]

ref https://linear.app/ghost/issue/PLA-249

• in custom Ghost docker builds, adapters installed in the default content dir are potentially susceptible to shadowing if the content dir is bind-mounted into the container
• adding a separate 'installedAdaptersPath' config option allows specifying a directory inside the container build where adapters can be installed

Long-term it may make sense to deprecate the content/adapters path (esp in Docker installs) but for now this unblocks custom adapter installs.

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• ghost/core/core/server/services/adapter-manager/index.ts

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Walkthrough

The adapter manager now builds its lookup paths with a Set<string>, retaining the existing node_modules, content adapters, and internal adapter locations while adding the optional configured installed adapters path. The resulting set is converted to an array when constructing the singleton AdapterManager.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the main change: adding a configurable adapter install location.
Description check	✅ Passed	The description is clearly about the new installedAdaptersPath config and its Docker build use case.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Commit unit tests in branch feat/adapters-custom-path

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☁️ Nx Cloud last updated this comment at 2026-07-21 11:55:24 UTC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.56%. Comparing base (6217048) to head (a361e47).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #29487      +/-   ##
==========================================
- Coverage   74.59%   74.56%   -0.04%     
==========================================
  Files        1604     1604              
  Lines      140906   140913       +7     
  Branches    17202    17202              
==========================================
- Hits       105108   105068      -40     
- Misses      34740    34789      +49     
+ Partials     1058     1056       -2     

Flag	Coverage Δ
e2e-tests	76.64% <100.00%> (-0.04%)	⬇️

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