Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're using Python 3.12 on a modern Linux distribution (like Fedora 38+, Ubuntu 23.04+, o...

You run docker system prune -a expecting a big space recovery, but the freed space i...

You've configured nginx, but when you try to access your site, you see a 403 Forbidden<...

Docker Compose .env File Not Loading: Common Fixes
You set environment variables in a .env file next to your docker-compose.yml

Git Merge Conflict: How to See the Diff Between Versions
When you run git merge and hit a conflict, Git pauses and marks the conflicting file...

Docker Build Canceled: How to Get Verbose Logs
If your Docker build fails with a “context canceled” error, it usually means the build was interr...