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

How to Validate Nginx Configuration Before Reload

Reloading nginx with a broken configuration can take your site down. The safe way is to test the ...

How to Allow Unrelated Histories in Git Merge

Chrome Extensions Not Loading? Reset Chrome to Fix

You open Chrome, click the extensions icon, and nothing happens. Or extensions are grayed out, mi...

Docker Compose Env File Not Being Read: Fixes

You set up a .env file for your Docker Compose project, but variables aren't bei...

How to Fix Cloudflare 521 Error (Port 443 Blocked)

When you see a Cloudflare 521 error, it means Cloudflare’s servers cannot connect to your origin ...

docker compose set environment variable from file

When running Docker Compose, you often need to pass environment variables to your services. Hardc...