The mesh-catalog container goes with its Dockerfile, build bases, bus credential and mesh-state directory. Its words are the database URL file where the mesh writes it. `pg` is a dependency in its package.json, which the builder now installs and inlines into the bundle (mesh-controller: a TypeScript bundle installs its module's own packages). `prepares: true` needs a container running the module's own artifact, so it becomes what ADR 0198 §3 says it is: prepare/index.js run by node as a run-once process, with the same words and no bus, before the runtime is started with the version that needs it, and again when the database URL changes.
jochen
ed50130a6a