Make internal and host ports configurable via env vars

README.md

@@ -39,13 +39,15 @@ The repo includes a `docker-compose.yml` that builds directly from GitLab, so Po
    - `ADMIN_PASSWORD`
    - `SMTP_PASS`
    - `PUBLIC_BASE_URL` (your HTTPS domain)
+   - `INTERNAL_PORT` (default `8000`) — port the container listens on
+   - `HOST_PORT` (default `127.0.0.1:8000`) — host-side mapping to avoid conflicts with other containers
    - `BOOTH_NAME` (optional)
 5. Deploy the stack.
 6. Open a console into the `booth` container and run once:
    ```bash
    python init_db.py
    ```
-7. Point your reverse proxy (Nginx Proxy Manager, Traefik, Caddy, etc.) at `http://host-ip:8000` on the chosen domain.
+7. Point your reverse proxy at the `HOST_PORT` you chose (e.g. `http://host-ip:8000`).
 8. Print the booth QR code pointing to `https://your-domain/request`.
 
 ### Portainer Notes