Our application began as an HTML5 browser game, however we decided to leverage certain native parts of desktop applications by wrapping our client code into Electron. This also allowed us to not have to worry about compatibility across all the various browsers.
Drone acts as our CI service for testing our application. We also use it as a deployment server for building docker images for production once tests pass on the master branch. The docker image acts as a deployment artifact that Convox can use to deploy.
Our client platform utilizes Electron which is also built and pushed to S3 for download.