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

Docker Container Exits Immediately in Docker Compose

If your Docker container exits immediately after starting with docker compose up, it...

How to Change npm Directory to Avoid Permission Denied

If you've seen "EACCES: permission denied" when running npm install -g, ...

How to Speed Up Cloudflare DNS Propagation

When you change DNS records in Cloudflare, propagation can sometimes feel slow. While you can'...

DNS Probe Finished NXDOMAIN: Troubleshooting Checklist

Seeing "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome means the browser couldn't find the IP...

Fix Virtual Environment Not Activating in Terminal

Why Your Virtual Environment Won't Activate

You open a terminal, navigate to your pro...

Fix 'network not found' Error in Docker on Linux

When you see docker: Error response from daemon: network <name> not found on L...