Docker support for React Router v7 app

[flo-sch]

Hey, nx@21 introduced a new React Router plugin for react apps, allowing to build applications using react-router v7.

That setup works fine OOTB, the nx executor calls react-router build and the generated artifact contains a "server/index.js" that can be used as an entrypoint for a production server: react-router-serve build/server/index.js

I was then wondering how to add docker support for such project, in order to deploy that project to {ECS, Cloud Run, ACA ... insert name of other docker based infrastructure solution}?

React Router has some documentation on deployment, as well as several templates showing how to add docker support, such as the node-postgres example

But in the context of an nx project, the generated build folder does not contain a package.json or package manager lockfile that can be used to install the pruned dependencie, like @nx/js:prune-lockfile does.
The root package.json may contain a lot of dependencies unrelated to react & react-router (backend node apps or such)

Would adding custom executors based on @nx/js to generate a package.json and lockfile be the way to go, or how should that be approched?