Adds base image, as Zulu will be upgraded less frequently than Kafka

Author: solsson

jre-zulu/Dockerfile

@@ -0,0 +1,19 @@
+FROM debian:stable-20170620
+
+ENV ZULU_OPENJDK_VERSION="8=8.21.0.1"
+
+RUN set -ex; \
+  runDeps=''; \
+  buildDeps='gnupg dirmngr'; \
+  apt-get update && apt-get install -y $runDeps $buildDeps --no-install-recommends; \
+  \
+  apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0x219BD9C9; \
+  echo 'deb http://repos.azulsystems.com/debian stable main' > /etc/apt/sources.list.d/zulu.list; \
+  apt-get update && apt-get install -y zulu-${ZULU_OPENJDK_VERSION} --no-install-recommends; \
+  \
+  cd /usr/lib/jvm/zulu-8-amd64/; \
+  rm -rf demo man sample src.zip; \
+  \
+  apt-get purge -y --auto-remove $buildDeps; \
+  rm -rf /var/lib/apt/lists/*; \
+  rm -rf /var/log/dpkg.log /var/log/alternatives.log /var/log/apt