yarn build
</pre>
+### Build time configuration
+You can customize project global variables using env variables. Default values are placed in the `.env` file.
+
+Example:
+```
+REACT_APP_ARVADOS_CONFIG_URL=config.json yarn build
+```
+
+### Run time configuration
+The app will fetch runtime configuration when starting. By default it will try to fetch `/config.json`. You can customize this url using build time configuration.
+
+Currently this configuration schema is supported:
+```
+{
+ "API_HOST": "string"
+}
+```
+
### Licensing
Arvados is Free Software. See COPYING for information about Arvados Free