add Dockerfile

Dockerfile

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+FROM selenium/standalone-firefox:latest
+
+ENV MAVEN_VERSION 3.3.3
+ENV DISPLAY :99
+
+USER root
+
+RUN apt-get update -qqy \
+  && apt-get install -y openjdk-8-jdk && \
+  rm -rf /var/lib/apt/lists/*
+
+RUN wget -O- http://archive.apache.org/dist/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz | tar xzf - -C /opt \
+  && mv /opt/apache-maven-$MAVEN_VERSION /opt/maven \
+  && ln -s /opt/maven/bin/mvn /usr/bin/mvn
+
+RUN mkdir /home/seluser/gameoflife-acceptance-tests \
+  && mkdir /home/seluser/gameoflife-web
+COPY /gameoflife-acceptance-tests /home/seluser/gameoflife-acceptance-tests
+COPY /gameoflife-web /home/seluser/gameoflife-web
+RUN chown -R seluser /home/seluser/gameoflife-acceptance-tests \
+  && chmod -R u+rX /home/seluser/gameoflife-acceptance-tests \
+  && chown -R seluser /home/seluser/gameoflife-web \
+  && chmod -R u+rX /home/seluser/gameoflife-web
+
+USER seluser
+
+ENV MAVEN_HOME /opt/maven
+
+EXPOSE 9090
+
+CMD ["mvn"]