docker-compose.yml no longer contains ./app:/var/www/html bind-mounts.
Local dev bind-mounts live in docker-compose.override.yml which docker
compose CLI auto-merges but Portainer does not read (Portainer uses
either docker-compose.yml or docker-compose.portainer.yml).
This prevents future Portainer 'Limited' state caused by CLI deploys
overwriting Portainer-managed containers.