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Docker Container Exits Immediately in Foreground Mode: Fixes - How to Fix Nginx 502 Upstream Connection Refused-Python Dependency Conflict Troubleshooting Guide

Updated 2026-07-28 07:49:53developer-tools
Docker Container Exits Immediately in Foreground Mode: Fixes - How to Fix Nginx 502 Upstream Connection Refused-Python Dependency Conflict Troubleshooting Guide
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.