note that default key type of JSON
@@ -130,7 +130,8 @@ account that has authorization to push to Google Container Registry:
5. Give your account a descriptive name such as "BinderHub-registry"
6. Click ``Role -> Storage -> Storage Admin`` menu option
7. Check **Furnish new private key**
-8. Click **Create**
+8. Leave key type as default of **JSON**
+9. Click **Create**
These steps will download a **JSON file** to your computer. The JSON file
contains the password that can be used to push Docker images to the ``gcr.io``
