Adding commented out Java installation

Dockerfile

@@ -6,6 +6,18 @@ ARG version=3.2.1
 ENV VERSION=$version
 ENV JAVA_OPTS=-Xmx1500m -XX:MaxPermSize=128m
 
+# Uncomment all the following lines to download the JDK to your Shibboleth IDP image.  By uncommenting these lines, you agree to the Oracle Binary Code License Agreement for Java SE (http://www.oracle.com/technetwork/java/javase/terms/license/index.html)
+
+# ENV JAVA_VERSION 8u101
+# ENV BUILD_VERSION b13
+#
+# RUN wget -nv --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/$JAVA_VERSION-$BUILD_VERSION/jdk-$JAVA_VERSION-linux-x64.rpm" -O /tmp/jdk-8-linux-x64.rpm && \
+#     yum -y install /tmp/jdk-8-linux-x64.rpm && \
+#     rm -f /tmp/jdk-8-linux-x64.rpm && \
+#     alternatives --install /usr/bin/java jar /usr/java/latest/bin/java 200000 && \
+#     alternatives --install /usr/bin/javaws javaws /usr/java/latest/bin/javaws 200000 && \
+#     alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 200000
+
 RUN chown -R root:root /opt/shibboleth/shibboleth-identity-provider-$version && \
     rm -rf /usr/local/tomcat/webapps/* && \
     ANT_OPTS="-Didp.target.dir=/opt/shibboleth/current" /opt/shibboleth/current/bin/build.sh && \