RUN chown -R elasticsearch:elasticsearch /usr/share/elasticsearch /etc/logrotate.d/elasticsearch /usr/local/bin/healthcheck \
&& chmod +x /usr/share/elasticsearch/elasticsearch-setindex \
-# workaround for Elasticsearch: this way ES can list the used plugins
-&& cp -a /usr/share/elasticsearch/modules/* /usr/share/elasticsearch/plugins/ \
-&& chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/plugins
+# workaround for Elasticsearch: this way ES can list the used plugins, and remove the jdk folder (open jdk slimmer)
+&& cp -al /usr/share/elasticsearch/modules/* /usr/share/elasticsearch/plugins/ \
+&& chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/plugins \
+&& rm -rf /usr/share/elasticsearch/jdk
# workaround end
CMD ["elasticsearch"]