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Fixing 'Context Canceled' Errors During Docker Image Builds - DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences-Troubleshooting Nginx Backend Connection Refused

Updated 2026-07-28 13:40:39browser-issues
Fixing 'Context Canceled' Errors During Docker Image Builds - DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences-Troubleshooting Nginx Backend Connection Refused
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.