Checklists for software errors, setup, and tool workflows.

Docker Container Exits Immediately with Exit Code 137

You start a Docker container, and it exits almost immediately with exit code 137. This usually me...

Docker Container Exits Immediately: How to Find Logs and Fix It

You start a Docker container and it stops within seconds. The status shows "Exited (0)" o...

Fix Windows 11 WiFi No Internet Due to Proxy Settings

If your Windows 11 laptop shows full WiFi bars but browsers say “No internet,” a common culprit i...

npm run build Failed: Troubleshooting Checklist

When npm run build fails, the error message can be cryptic. This checklist walks thr...

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Docker Compose 'Network Not Found' Error Fix

When running docker compose up, you might see an error like:

network "my...