Add Ubuntu production deployment script and documentation

README.md

@@ -114,6 +114,42 @@ Users can choose their preferred login method on the login page.
 - All processing happens server-side with temporary file storage
 - Maximum upload size is limited to 100MB
 
+## Production Deployment
+
+For production deployment on Ubuntu with reverse proxy:
+
+1. **Run the automated installation script**:
+   ```bash
+   # On your Ubuntu server
+   wget https://gitlab.com/trbc-dev/pdf-rename-sort/-/raw/main/ubuntu-install.sh
+   chmod +x ubuntu-install.sh
+   sudo ./ubuntu-install.sh
+   ```
+
+2. **Configure environment variables**:
+   Edit `/etc/systemd/system/pdf-renamer.service` and update:
+   - `SECRET_KEY`: Generate a secure random key
+   - `TENANT_ID`, `CLIENT_ID`, `CLIENT_SECRET`: From Azure AD app registration
+   - `ADMIN_USERNAME` and `ADMIN_PASSWORD`: Set secure credentials
+
+3. **Update domain configuration**:
+   Edit `/etc/nginx/sites-available/pdf-renamer` and replace `your-domain.com` with your actual domain
+
+4. **Enable SSL (recommended)**:
+   ```bash
+   sudo apt install certbot python3-certbot-nginx
+   sudo certbot --nginx -d your-domain.com
+   ```
+
+5. **Reload services**:
+   ```bash
+   sudo systemctl daemon-reload
+   sudo systemctl restart pdf-renamer
+   sudo systemctl reload nginx
+   ```
+
+The application will be accessible at your domain on ports 80 (HTTP) and 443 (HTTPS after SSL setup).
+
 ## Development
 
 To contribute or modify: