Spike to work out what's required to run a Spring MVC application using embedded Tomcat, where the application is configured only with code and annotations, no XML files.
After launch, you should be able to go to http://localhost:8080/app/hello and see "Hello World".
The application port can be controlled using the PORT environment variable.
Run the tests using ./gradlew clean test or mvn clean verify.
Build an executable jar complete with all dependencies using ./gradlew clean onejar or mvn clean compile assembly:single.