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

Recover Lost Changes After Git Detached HEAD

You've made several edits, then checked out an old commit or tag, and now Git says you're...

Fix Docker Container Exits Immediately in Background Mode

You run a Docker container with -d (detached mode) and it exits immediately. The con...

Docker Compose Environment Variable Not Set in Container: Fixes

You ran docker-compose up, but the environment variable you defined isn't availa...

Chrome Startup Crash Due to Sandboxing: How to Fix

You open Chrome, it starts to load, then crashes before the window fully appears. This can happen...

Fix Cloudflare Wildcard Subdomain Redirect Loop