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

How to Fix Cloudflare 521 Error Due to Proxy Issues

If you see a Cloudflare 521 error, the message usually says something like “Web server is down.” ...

Fix Docker Container Exits Immediately in Background Mode

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

Using nvm to Switch Node Version for a Specific Package

You might find that a package fails to install or run because it requires a specific Node.js vers...

Docker Compose Environment Variable Not Set in Dockerfile

You set an environment variable in your docker-compose.yml file, but when you try to...

Fix VS Code Git Changes Not Showing in Source Control Panel

You open the Source Control panel in VS Code expecting to see your unstaged and staged changes, b...

Fix Git Push Rejected Non Fast Forward Error