Docker Hub: https://hub.docker.com/r/iron/java/
The iron/java:dev
images are for building, they have the JDK installed.
The iron/java
ones are for running, they just have the JRE installed.
See java-1.7 or java-1.8 README's.
This will build Java 1.7 and Java 1.8 images.
ruby build.rb