Deploy it

One container for the site, one for its Abracadabra server. The seeder writes a starter tree into an empty backend on first connect, so a clean volume yields a working site with no manual steps.

The check that matters afterwards is not whether the site answers — a deployment whose server runners never booted answers every request with a 200 and looks perfect in a browser, because the client syncs the tree itself. Ask whether it can SERVER-render: pnpm deploy:check <url>, or the health endpoint it reads.