You can build frontend using gradle:
$ cd frontend
$ ./gradlew build
You will find a jar file in frontend/server/build/libs file.
Frontend web server using a configuration file to control the behavior of the frontend web server. An sample config.properties can be found in frontend/server/src/test/resources/config.properties. This configure will load a noop model by default. The noop model file is located in frontend/modelarchive/src/test/resources/model/noop-v0.1.model.
cd frontend/server
../gradlew startServer
cd frontend/server
../gradlew killServer