Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You try to start a container or pull an image and get no space left on device. Often...

If you're seeing FATAL ERROR: Ineffective mark-compacts near heap limit Allocation fail...

Fix Chrome Certificate Error: Invalid Authority on Company Network
When Chrome displays Your connection is not private with NET::ERR_CERT_AUT...

Fix Nginx 502 Bad Gateway with Docker Environment Variables
If you see a 502 Bad Gateway from nginx running in Docker, it usually means ngin...

Resolving Git Merge Conflicts in Binary Files
You're merging branches and Git reports a conflict in a binary file. Unlike text files, you c...

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 ...