This is an example Ratpack app that:

1. Is implemented in Java
2. Use Guice for dependency injection
3. Uses the ratpack Gradle plugin
4. Builds a docker image using the Gradle Docker plugin docker-java-application

Check this project out, cd into the directory and run:

./gradlew run

This will start the ratpack app in a development mode. In your browser go to http:https://localhost:5050.

Building a docker image and running it can be done with the following commands:

./gradlew dockerBuildImage
docker images # just for information
docker run --rm -it skyr.ch/ratpack
# the running server must be terminated with Ctrl-C

• Visit https://www.docker.com
• Docker Gradle Plugin: https://github.com/bmuschko/gradle-docker-plugin

To learn more about Ratpack, visit http:https://www.ratpack.io