Rudder's setup ran before Vite and the sign-in proxy, so the whole site answered 502 for minutes on every
start while the engine built and ~742 MB downloaded; on the first start the download was reset mid-file and
Rudder stayed offline. Now the runtime and pinned model are baked into an early image layer (SHA-256
checked, resumed and retried on a stall), setup runs in the background, /api/rudder answers "starting"
meanwhile, and the dev server restarts once when setup ends so the engine starts.
deployment/cloud/: a bootstrap Dockerfile (Bun, git, oauth2-proxy v7.15.3) that clones the repo
and runs deployment/cloud/entry.sh from it, so the recipe updates with git; the Vite overlay
(host, allowed hosts, HMR over wss); and the pull loop that follows the branch. With no OIDC env it
serves Vite directly (laptop default unchanged). With OIDC_ISSUER set, oauth2-proxy owns the port
and Vite listens on localhost behind it: Studio, maps and the HMR websocket all sit behind one
sign-in, with PKCE S256, a confidential client and a REQUIRED group allow-list (it refuses to
start without one). Secrets reach oauth2-proxy through its environment only. README gets a short
'Run it in the cloud' section linking the recipe.
