How to package and deploy Grails 3.3.2 Angular project in tomcat

I created sample Grails Angular project. When I run a gradlew war it packages only server-side code, its not adding the client-side code. What is the proper way to package and deploy this project?

./gradlew war
Starting a Gradle Daemon, 1 busy Daemon could not be reused, use --status for details
:server:compileJava NO-SOURCE
:server:compileGroovy UP-TO-DATE
:server:buildProperties UP-TO-DATE


Total time: 17.307 secs

Source: AngularJS