Checklists for software errors, setup, and tool workflows.

Docker Compose Ports Not Working: Common Fixes

You've defined ports in your docker-compose.yml, but containers aren't reachable on the e...

Docker Desktop Engine Stopped: Fix Firewall Block

If Docker Desktop shows “Engine Stopped” and you suspect a firewall block, here’s how to diagnose...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Docker Container Exits Immediately with Code 0: Fixes

You run a Docker container and it stops almost instantly with exit code 0. This means the main pr...

Fix Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Fix PowerShell Permission Denied in VS Code

When you try to run a PowerShell script in VS Code and get a "permission denied" error, i...