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

Docker Compose Ports Not Working: Common Fixes

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

DNS Probe Finished NXDOMAIN: Internet Connection but No Browsing Fix

You see the error 'DNS probe finished NXDOMAIN' on Chrome or other browsers, yet your int...

How to Fix Git Detached HEAD and Checkout a Branch

You're working in a Git repository, make some commits, and then realize you're in a '...

Docker Container Exits Immediately in Foreground Mode: Fixes

You run a Docker container with docker run -it myimage and it exits immediately. The...

Checklist for Troubleshooting Nginx Permission Denied Errors

Understanding the Problem

When Nginx returns a 403 Forbidden or logs an error like ...