vijaykardak96k-dev/Mern-Stack-DevOps ? reverse-engineered prompt

Build me a simple full stack MERN style app with a frontend and a backend, and make it easy to run locally with Docker Compose.

I want the project set up so I can start the whole app with one command, then also deploy it to Kubernetes with Helm charts and plain k8s manifests. Please include a basic Jenkins pipeline too so the app can be built, tested if needed, containerized, and deployed automatically.

Keep the app itself simple and usable, with a clean homepage and a basic backend API so the frontend has something real to talk to. Make sure the setup is organized clearly, works together without extra manual steps, and is easy to understand for someone who just wants to spin it up and see it running.

If anything depends on current best practices or newer docs, look them up online as you build it.