docker-next-config-mounts

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name: docker-next-config-mounts description: Use when asked to fix Docker Compose bind mounts for Next.js config so they mount next.config.mjs (not next.config.js) and avoid the next.config.js/ directory bug.

Goal: ensure Docker Compose mounts the correct Next.js config file and avoid Docker creating a next.config.js/ directory when a bind source path is missing.

Workflow:

1. Confirm the repo uses next.config.mjs

   • Check that next.config.mjs exists at the expected path.

2. Fix compose files

   • Replace mounts of next.config.js with next.config.mjs.
   • Prefer read-only mounts: :ro.

3. Prevent recurrence

   • Ensure the mounted source file exists in the repo.
   • Optionally add next.config.js/ to .gitignore to prevent accidental commits if it was created previously.

4. Validate

   • Rebuild or restart dev containers as needed.