Once your (empty) application is displayed, you will have to build your application in order to deploy it on your Cloud environment. Fortunately, the build is automatic as soon as you deploy your project :

To proceed, right click on your project in the treeview, then click "Deploy". It will open a window that will automatically build your application. Once done, name your project version as you like, and click next -> finish. Il will give you a link where you will be able to find your deployed application.