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Fix Docker Compose Port Already Allocated on Linux - Troubleshoot 502 Bad Gateway in Docker Nginx-Fix Node Sass Build Failed Error

Updated 2026-07-28 11:16:04developer-tools
Fix Docker Compose Port Already Allocated on Linux - Troubleshoot 502 Bad Gateway in Docker Nginx-Fix Node Sass Build Failed Error
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.