Dokploy deployment fixes:
- Remove all host port bindings (Kong 8000/8443/3000, Studio 54323, Inbucket 54324,
DB 5432) — Traefik handles external routing in Dokploy, host ports conflict
with other services on the shared server
- Add idempotent ALTER ROLE password commands to db-migrate service — ensures
role passwords are set even when DB volume persists across deployments
(docker-entrypoint-initdb.d only runs on empty data dirs)
- Add catch-all app route to Kong config — proxies / to localhost:3000
(Next.js app via network_mode: service:supabase-kong)