Workflow manuals for setup steps, repeatable tasks, and software operations.

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 Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Fix Nginx Upstream Connection Refused in Docker

You have Nginx running, either on the host or in a container, proxying to another Docker containe...

How to Fix Cloudflare 521 Error During Setup

If you see a 521 error after setting up Cloudflare, it means your origin server refused the conne...

How to Fix Git Push Rejected Non-Fast-Forward Error

When you run git push and see “rejected – non-fast-forward”, it means your local bra...

Fix Git index.lock File Exists Permission Denied Error

You're in the middle of a Git operation and suddenly you see:

fatal: Unable to ...