Advanced AI Prompt for Python Django with Celery and Redis

Act as an Expert DevOps Architect. Design a unified, multi-stage Dockerfile utilizing target builds for a complex Django ecosystem. The foundational build must handle [PYTHON_VERSION], execute static file collection to [STATIC_ROOT], and prepare database migrations using [DJANGO_SETTINGS]. Provide precise instructions and build arguments demonstrating how this single Dockerfile serves as the base to independently launch the WSGI/ASGI Web process, the Celery worker targeting [CELERY_APP], and the Celery beat scheduler via different `ENTRYPOINT` overrides. Focus heavily on maximizing shared image layers to drastically reduce registry storage overhead.