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

How to Push a Git Detached HEAD to Remote

You're working on a Git repository and realize you're in a 'detached HEAD' state....

How to Allow Unrelated Histories in Git Merge

Docker Network Not Found After Container Restart: Fixes

You restart a Docker container and get an error like network <name> not found....

Docker Compose Secret vs Environment Variable: When to Use Each

If you're writing a docker-compose.yml and wondering whether to put a value in <...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix 'Permission Denied' When Running pip install --user