I have a fresh Debian 12 machine ready and need the entire website and its FastAPI-based backend moved over with zero functional changes. Your job is to replicate the current environment, migrate all data, and prove the site works exactly as before. Server stack to be installed • Python 3.11 running FastAPI served by Uvicorn • Async SQLAlchemy with PostgreSQL using asyncpg / psycopg2 • Celery backed by Redis • defusedxml for our IDS/OTA XML processing • Docker & Docker-Compose orchestration • Nginx as the reverse proxy • Front-end layer next: "15.5.7" Migration scope • Database data, application files, and every configuration file from the old host • Container images or native services recreated on the new box • Environment variables, systemd services, and any existing cron or Celery schedules mirrored • Final smoke tests confirming API endpoints, background jobs, and web pages all behave as they do now Acceptance criteria 1. Site and API available on the new server under the existing domain. 2. All database records intact; sample queries return identical results. 3. Celery tasks execute successfully and Redis queues stay healthy. 4. A short hand-over document explains service start/stop commands and backup paths. Old and new server credentials, plus a maintenance window, will be supplied as soon as we agree on the timeline. Feel free to ask for any extra details you need to complete a smooth, one-shot cutover. The whole root folder data size is 90 GB ( includes above Listed software and application files )