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Fix 'port already allocated' Error in Docker Compose - Troubleshoot Nginx 502 Bad Gateway in Docker Load Balancer-Fix 'node-sass build failed python not found' Error

Updated 2026-07-28 14:39:31office-tools
Fix 'port already allocated' Error in Docker Compose - Troubleshoot Nginx 502 Bad Gateway in Docker Load Balancer-Fix 'node-sass build failed python not found' 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.