Unable to deploy angular2 app with angular-seed in Tomcat server

I want my angular 2 app with angular-seed to be run in tomcat server with predefined folder. I pulled the code from https://github.com/mgechev/angular-seed/ I am able to run it in my local i.e. http://localhost:5555/. I build this with npm run build.prod, it generated dist folder with prod. I added all this content to Root folder of tomcat server, I made server to start. Its running in http://localhost:8080/ I want it should run like http://localhost:8080/myapp/ I have tried by adding myapp folder in webapps folder of tomcat, and copied the content of prod folder of dist. I am getting the error like Can any of you help me with this.

A base argument is required.

npm run build.prod -- --base=/myapp/