Checklists for software errors, setup, and tool workflows.

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Latest checklists

You set environment variables in a .env file next to your docker-compose.yml

Fixing Nginx 502 Bad Gateway in Docker Networks
You have an Nginx container proxying requests to another container (like a PHP-FPM or Node app), ...

Python Command Not Found in CMD but Works in Anaconda
You open Command Prompt, type python, and get 'python' is not recogniz...

Fix npm run build Failure Due to Node Version Mismatch
You run npm run build and it fails with errors like SyntaxError: Unexpected to...

Fix Cloudflare Wildcard Subdomain Not Working
If you've set up a wildcard DNS record in Cloudflare (e.g., *.example.com) but s...

How to Change npm Directory to Avoid Permission Denied
If you've seen "EACCES: permission denied" when running npm install -g, ...