Something like Open Source "Marketplace" with multi-node deployments (JSON definitions)?
If not, is this planned?
The best place to do it today would be as a pull request - we're trying to get as many "examples" as we can to help prove out the necessary features w.r.t. linking
If you submit a pull request, be sure to add a comment in the JSON that includes the Git Repo containing the Dockerfile that builds the images you use (so that other people can build and test those images).
Down the road it'd be nice to have a list of those examples someplace common - not quite there yet.