I think https://atlas.openmrs.org/ is already connected to the Atlas module as seen here. But the module’s functionality won’t be working (besides display the webpage on the canvas). We’re working on fixing it. 
I’m assuming you want to work on ATLAS-169. To setup the environment, I followed these steps. This should start up the node server, and you can now build and test atlas from the browser. Burke described how he set it up using docker too.