Updated README

README.md

@@ -14,3 +14,33 @@ app_port: 8866
 - GitHub: <https://github.com/opengeos/voila-geospatial>
 - Hugging Face: <https://huggingface.co/spaces/giswqs/voila-geospatial/tree/main>
 - Web App: <https://giswqs-voila-geospatial.hf.space>
+
+## How to deploy this app to Hugging Face Spaces
+
+1. Go to <https://huggingface.co/spaces/giswqs/voila-geospatial/tree/main> and duplicate the space to your own space.
+
+   ![](https://i.imgur.com/4ib5BzB.png)
+
+2. Set environment variables as need. For example, if you use Google Earth Engine, you need to set `EARTHENGINE_TOKEN` to your Earth Engine token. The token value should be copied from the following file depending on your operating system:
+
+   ```text
+   Windows: C:\\Users\\USERNAME\\.config\\earthengine\\credentials
+   Linux: /home/USERNAME/.config/earthengine/credentials
+   MacOS: /Users/USERNAME/.config/earthengine/credentials
+   ```
+
+   Simply open the file and copy **ALL** the content to the `EARTHENGINE_TOKEN` environment variable.
+
+   ![](https://i.imgur.com/i04gzyH.png)
+
+   ![](https://i.imgur.com/Ex37Ut7.png)
+
+3. After the space is built successfully, click the `Embed this Space` menu and find the `Direct URL` for the app, such as <https://giswqs-voila-geospatial.hf.space>.
+
+   ![](https://i.imgur.com/V2Lp0dP.png)
+
+   ![](https://i.imgur.com/klhR5FL.png)
+
+4. Add your own notebooks to the `notebooks` folder and wait for the app to be rebuilt.
+
+5. To hide the source code from the notebook, modify `run.sh` and set `--strip_sources=True`.