bre4d777/twelve ? reverse-engineered prompt

Build me a small TypeScript app that runs cleanly in Docker, with the source code in the src folder and everything set up so I can develop and run it locally without much fuss.

I want the project to have a simple, working structure, sensible startup scripts, and a smooth Docker setup with a compose file for local use. Please make sure it can be built and started from scratch, and that the TypeScript configuration is correct so it compiles without errors. If you need to make reasonable choices about the app itself, keep it simple and practical, like a basic starter service or utility with a clear entry point.

If anything is unclear, use current docs online to fill in the gaps. I mostly want a clean, ready to run project that feels complete and not just a bare scaffold.