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Fix Docker Compose Environment Variable Missing Errors - Git index.lock Error: How to Fix It-Resolve Nginx 502 with Docker and PHP-FPM

Updated 2026-07-28 13:31:50cloud-software

Fix Docker Compose Environment Variable Missing Errors - Git index.lock Error: How to Fix It-Resolve Nginx 502 with Docker and PHP-FPM

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.