Create or Login to an Azure Account
Create a new DocumentDB service
Locate the EndpointUri and the Primary Key
Run this container, locally using just Docker:
docker run -d -p 8084:80 -e "DocDbEndpointUri=[docDb endpoint]" -e "DocDbPrimaryKey=[docDb key]" kstreith/acs-gab-demo:1.0
Navigate to http://localhost:8084/. Click to add/delete users. Users are added to the DocumentDB account you created in Azure.