Checklists for software errors, setup, and tool workflows.

Cloudflare DNS Propagation Not Working with New Domain: Fixes

You registered a new domain, set it up with Cloudflare, but after hours (or days) the site still ...

Docker Container Exits Immediately: No Error, Common Fixes

You run docker run and the container starts, then exits within a second. No error me...

Fix 'Windows Cannot Access Shared Folder' via Registry

When Windows reports it cannot access a shared folder, the cause is often a misconfigured registr...

Docker System DF Shows No Space Left: Fixes & Checks

When you run docker system df and see no space left on device, your Doc...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Python Virtual Environment Not Activating in Git Bash: Fixes

You're in Git Bash on Windows, you run source venv/Scripts/activate, and nothing...