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Fix npm install Permission Denied in CI/CD Pipelines - How to Resolve Cloudflare 521 After Server Update-Resolve Docker Compose Port Already Allocated

Updated 2026-07-28 10:26:37office-tools

Fix npm install Permission Denied in CI/CD Pipelines - How to Resolve Cloudflare 521 After Server Update-Resolve Docker Compose Port Already Allocated

Likely symptom

Likely cause

Safe rollback

Verification route

Repeat the original action, not only a simplified test case.
Restart the app or reload the service after configuration changes.