I'd love to explore how this framework can be applied to Nakama (https://github.com/heroiclabs/nakama). I'll see if I can find some time to experiment with it over Christmas.
This looks pretty interesting. Could Nakama be used to build a federated, decentralized application (let's say, game world) where each user self-hosts on his own Docker instance?
The way Nakama is designed right now would not lend itself well to a decentralized game world right now. There's another project of ours which will address what you have in mind but not until the new year.