[keycloak-user] How to deploy the "customer-app-js" app in a tomcat ?

Hi, There, I am trying to understand the public client  app and manage to deploy the "customer-app-js" into a  tomcat server and  keep the keycloak 1.5  demo server as is.  Is there anyone kindly to tell me what I should  modify on the original "customer-app-js" to make it work.    Thanks a million. Mai