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Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Troubleshooting Docker Build Context Canceled Error-How to Stop Docker Container from Exiting on Start

2026-07-28 04:51:01office-tools
Fix Nginx 502 Bad Gateway: Upstream Connection Refused - Troubleshooting Docker Build Context Canceled Error-How to Stop Docker Container from Exiting on Start

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.

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