Docker: Add docker file for maven build and tests

Signed-off-by: Alexander Diewald <diewald@fortiss.org>

docker/Dockerfile

+FROM maven:latest
+
+RUN apt-get update
+
+RUN apt-get install -y libgtk-3-bin xvfb libgomp1
+
+ENV DISPLAY=:99
+ADD xvfb.sh /usr/bin/xvfb.sh
+RUN chmod a+x /usr/bin/xvfb.sh

docker/xvfb.sh

+#!/bin/sh
+
+XVFBARGS="$DISPLAY -ac -screen 0 1024x768x16 +extension RANDR"
+
+/usr/bin/Xvfb ${XVFBARGS} &
+
+exit 0