Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You've defined ports in your docker-compose.yml, but containers aren't reachable on the e...

You're running Nginx as a reverse proxy inside Docker on Ubuntu, and suddenly you see

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Git Merge Conflict: Keep Both Files Instead of One
When you run git merge and get a conflict, Git stops and marks the conflicting files...

Fix Docker Volume Permission Denied for MySQL
You attempt to run a MySQL container with a bind mount volume and get an error like mkdir: ...

Fix Docker Build Context Canceled in VS Code
When building Docker images from within VS Code, you might see an error like build context ...