press0

*Description of changes:* add an example By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

According to these fine spring boot docker articles: - https://stackify.com/guide-docker-java/ - https://stackify.com/spring-boot-level-up/ the war file in the spring-boot-app module should be executable but it is not: $ java -Dspring.profiles.active=default -jar...