# Configuration Using Environment Variables

Some configuration file parameters can be changed without direct editing of the `/core/app_config.json` file. You can do it using the environment variables.

* `WA_ARCHITECTURE` – redefines the `architecture` parameter
* `WA_API_URL` – redefines the `api_url` parameter

Here's an example of using environment variables for the dockered Web SDK in the Lite mode: 

```bash
docker run -d -p 80:80 \
-e WA_ARCHITECTURE=lite \
-e WA_API_URL='http://127.0.0.1:8000/v1/face/liveness/detect' \
ozforensics/oz-webliveness:{tag}
```