diff --git a/Dockerfile b/Dockerfile
index 91ca5c8..8f4bf04 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,18 @@
-FROM elasticsearch:2.4.0
+FROM elasticsearch:5.5.2
 
-RUN bin/plugin install lmenezes/elasticsearch-kopf/v2.1.2
-RUN bin/plugin install io.fabric8/elasticsearch-cloud-kubernetes/2.4.0_01
+RUN bin/elasticsearch-plugin install io.fabric8:elasticsearch-cloud-kubernetes:5.5.2
 
-ENV BOOTSTRAP_MLOCKALL=false NODE_DATA=true NODE_MASTER=true JAVA_OPTS=-Djava.net.preferIPv4Stack=true
+ENV BOOTSTRAP_MLOCKALL=true NODE_DATA=true NODE_MASTER=true JAVA_OPTS=-Djava.net.preferIPv4Stack=true
+
+# Disable swap
+RUN echo 'vm.swappiness=1' | tee -a /etc/sysctl.conf
 
 # pre-stop-hook.sh and dependencies
 RUN apt-get update && apt-get install -y \
     jq \
     curl \
  && rm -rf /var/lib/apt/lists/*
+
 COPY pre-stop-hook.sh /pre-stop-hook.sh
 
 ADD elasticsearch.yml /usr/share/elasticsearch/config/elasticsearch.yml