This makes the launch profile portable between the command-line dotnet tools and Rider. The latest Rider 2018.3 Early Access Preview (EAP) build adds support for generating Rider run/debug configurations from launchSettings.json. This information can then be used by dotnet to run or debug our application. It describes the command to run, whether the browser should be opened, which environment variables should be set, and so on. NET Core application can have a file called launchSettings.json, which describes how a project can be launched.