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Docker Container Exits Immediately with Exit Code 137 - Nginx Socket Permission Denied Fix-How to Fix nginx upstream connection refused on localhost

Updated 2026-07-28 14:30:13browser-issues

Docker Container Exits Immediately with Exit Code 137 - Nginx Socket Permission Denied Fix-How to Fix nginx upstream connection refused on localhost

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.