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Fix Nginx Upstream Connection Refused in Docker - How to Resolve 502 Error with Docker Socket in Nginx-IntelliJ Git index.lock Error Fix

2026-07-28 14:33:13
Fix Nginx Upstream Connection Refused in Docker - How to Resolve 502 Error with Docker Socket in Nginx-IntelliJ Git index.lock Error Fix

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

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