Updated Dockerfile (added java support)

Author: David Renz

Dockerfile

@@ -1,5 +1,16 @@
+FROM ubuntu:15.04
+
 MAINTAINER Up2Go-DavidRenz
 
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y  software-properties-common && \
+    add-apt-repository ppa:webupd8team/java -y && \
+    apt-get update && \
+    echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
+    apt-get install -y oracle-java8-installer && \
+    apt-get clean
+
 WORKDIR /usr/src/app/
 
 COPY engine.json /