-# add a simple script that can auto-detect the appropriate JAVA_HOME value
-# based on whether the JDK or only the JRE is installed
-RUN { \
- echo '#!/bin/sh'; \
- echo 'set -e'; \
- echo; \
- echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \
- } > /usr/local/bin/docker-java-home \
- && chmod +x /usr/local/bin/docker-java-home
-ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
-ENV PATH $PATH:/usr/lib/jvm/java-1.8-openjdk/jre/bin:/usr/lib/jvm/java-1.8-openjdk/bin
+#configure the JDK
+RUN sed -i 's|#networkaddress.cache.ttl=-1|networkaddress.cache.ttl=10|' /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/java.security
+ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64
+ENV PATH $PATH:/usr/lib/jvm/java-8-openjdk-amd64/jre/bin:/usr/lib/jvm/java-8-openjdk-amd64/bin
+ENV CLASSPATH .:${JAVA_HOME}/lib:${JRE_HOME}/lib
+ENV JRE_HOME ${JAVA_HOME}/jre