X-Git-Url: https://git.arvados.org/arvados-workbench2.git/blobdiff_plain/fa73e280e87385b37c9aa9bc3cfee45ff66293d6..9ee2f1c761b0d5867dfcab90fc8d11de211a3030:/README.md

diff --git a/README.md b/README.md
index 864a54fa..e8d77701 100644
--- a/README.md
+++ b/README.md
@@ -26,14 +26,29 @@ yarn install
 yarn build
 </pre>
 
-### Configuration
+### Build time configuration
 You can customize project global variables using env variables. Default values are placed in the `.env` file.
 
 Example:
 ```
-REACT_APP_ARVADOS_API_HOST=localhost:8000 yarn start
+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",
+    "VOCABULARY_URL": "string"
+}
+```
+
+#### VOCABULARY_URL
+Local path, or any URL that allows cross-origin requests. See 
+[Vocabulary JSON file example](public/vocabulary-example.json).
+
 ### Licensing
 
 Arvados is Free Software. See COPYING for information about Arvados Free