How do I get dgraph-lambda working with the standalone image locally

Looks like dgraph-lambda is part of the main repo now: [BREAKING] feat: bring dgraph-lambda to dgraph, alpha launches lambda server by NamanJain8 · Pull Request #7973 · dgraph-io/dgraph · GitHub

Is it also part of the standalone image? Is there a flag I can use to activate it?

What’s the simplest way to get started with dgraph-lambda locally when using the standalone docker image?