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

Cloudflare Wildcard Subdomain CNAME Setup Guide

If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...

Docker Compose 'Network Not Found' Error Fix

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

Fix 'Permission Denied' Error When Using pip Install on Linux

When you run pip install somepackage on Linux and see Permission denied...

Fix DNS Probe Finished NXDOMAIN on Custom DNS Server

If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...

Docker Prune Not Freeing Enough Space: Practical Fixes

You run docker system prune -a expecting a big space recovery, but the freed space i...

Fix 'node-sass build failed python not found' Error