./gradlew :vtm-web-app:jettyDraftWar will run standalone Jetty server at port 8080.
./gradlew :vtm-web-app:jettyDraftWar
Then go to http://localhost:8080/vtm-web-app in the web browser to see the map.
http://localhost:8080/vtm-web-app
Hold right mouse button to change view direction.