Debian 7.8 with Java, Ruby, Node.js, Python and Docker.
Debian 7.8 image with Java 8 and Java 7 installed and a jdk switcher that allows to change between java versions.
Java 8 is the version by default.
Ruby version: 2.1.6
Python version: 2.7
Node.js version: 0.12.0
Docker version: 1.6.0
Docker Pull Command