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

Fix VS Code Breakpoint Not Hit in Docker Container

You set a breakpoint in VS Code, run your app inside a Docker container, and the breakpoint is ne...

Git Merge Conflict: Keep Both Files Instead of One

When you run git merge and get a conflict, Git stops and marks the conflicting files...

Cloudflare Error 521: Web Server Down Checklist

Cloudflare error 521 means your origin web server refused the connection. This is not a Cloudflar...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Setting Up Cloudflare Wildcard Subdomains for Multiple Sites

If you manage multiple sites or services on different subdomains (like app.example.com, blog.exam...

Fix Git index.lock File Exists Permission Denied Error

You're in the middle of a Git operation and suddenly you see: