The input describes a single service, which doesn't really need Compose — `docker run --name pg -e POSTGRES_PASSWORD=changeme -p 5432:5432 -v pg-data:/var/lib/postgresql/data postgres:16.4` would do it. Compose starts paying for itself at 2+ services that need to talk to each other. Could you tell me what else is in the stack? Common starter shapes: - Postgres + API + SPA (most common web stack) - Postgres + Redis + API + Worker (with a background queue) - Postgres + API + frontend bundler + a mock-services container (Mailhog, MinIO, etc.) - Mongo + API + SPA - something else?