Update for multi-domain deployment alongside existing apps

README.md

@@ -116,39 +116,43 @@ Users can choose their preferred login method on the login page.
 
 ## Production Deployment
 
-For production deployment on Ubuntu with reverse proxy:
+For production deployment on Ubuntu with reverse proxy (multi-domain setup):
 
 1. **Run the automated installation script**:
    ```bash
-   # On your Ubuntu server
+   # On your Ubuntu server (can coexist with other apps)
    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**:
+2. **Configure DNS**:
+   - Point a subdomain (e.g., `pdf-renamer.yourdomain.com`) to your server's IP
+   - This allows the app to run alongside your existing app on port 5000
+
+3. **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. **Update domain configuration**:
+   Edit `/etc/nginx/sites-available/pdf-renamer` and replace `pdf-renamer.your-domain.com` with your actual subdomain
 
-4. **Enable SSL (recommended)**:
+5. **Enable SSL (recommended)**:
    ```bash
    sudo apt install certbot python3-certbot-nginx
-   sudo certbot --nginx -d your-domain.com
+   sudo certbot --nginx -d your-subdomain.yourdomain.com
    ```
 
-5. **Reload services**:
+6. **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).
+The application will be accessible at your subdomain on ports 80 (HTTP) and 443 (HTTPS after SSL setup), running alongside your existing application.
 
 ## Development