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

Chrome Memory High After Update: How to Fix

After a Chrome update, you might notice the browser using more memory than usual—slowing down you...

Docker Compose Environment Variable from Shell Not Working: Fixes

You set an environment variable in your shell, but Docker Compose ignores it. This is a common pi...

Fix Docker Volume Permission Denied on Mac

Fix Nginx 502 Bad Gateway with Docker Multiple Containers

If you run Nginx as a reverse proxy in front of multiple Docker containers, a 502 Bad Gateway err...

Cloudflare DNS Propagation Checklist: Verify and Speed Up Changes

When you change a DNS record in Cloudflare, the update doesn't take effect instantly everywhe...

Fix Docker Container Exits Immediately in Background Mode

You run a Docker container with -d (detached mode) and it exits immediately. The con...