Knowledge base for software setup, errors, and daily tool work.

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Docker Desktop Engine Troubleshooting Checklist

When Docker Desktop fails to start or the engine stops responding, the cause is often a misconfig...

VSCode Terminal Not Opening on Ubuntu: Fixes That Work

You open the integrated terminal in VSCode on Ubuntu, but nothing happens—no shell, no error, jus...

Docker Compose ENV Not Passed to Entrypoint: Fix

You define an environment variable in your docker-compose.yml, but when the containe...

Fix 'Python Command Not Found' in Git Bash on Windows