Dead Simple Gradle and Java Project example

What I did.

1. Install gradle somehow ( ex: Homebrew )
2. gradle init
3. write code
4. java src/main/java/Hello.java
5. ./gradlew build
6. java -jar build/libs/example-dead-simple-java.jar
7. pack build <project> -D hello -B gcr.io/buildpacks/builder:google-22
8. docker run --rm hello
9. docker tag && docker push
10. gcloud run jobs deploy <job> --image <image>
11. gcloud run jobs execute <job>