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Fix Docker Compose Environment Variable Default Value Not Used - Nginx Upstream Connection Refused Error Fix-How to Fix Port Already Allocated in Docker Compose

2026-07-28 08:51:42
Fix Docker Compose Environment Variable Default Value Not Used - Nginx Upstream Connection Refused Error Fix-How to Fix Port Already Allocated in Docker Compose

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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