bump elk stack to 6.5.1

fix docker hub build

docker/elk/logstash/Dockerfile

@@ -4,22 +4,22 @@ FROM alpine
 ADD dist/ /root/dist/
 
 # Setup env and apt
-RUN apk -U --no-cache add \
-               bash \
-               curl \
-               git \
-               libc6-compat \
-               libzmq \
-               openjdk8-jre \
-               wget && \
+RUN apk -U add \
+             bash \
+             curl \
+             git \
+             libc6-compat \
+             libzmq \
+             openjdk8-jre \
+             wget && \
 
 # Get and install packages
     git clone --depth=1 https://github.com/dtag-dev-sec/listbot /etc/listbot && \
     cd /root/dist/ && \
     mkdir -p /usr/share/logstash/ && \
-    wget https://artifacts.elastic.co/downloads/logstash/logstash-6.4.3.tar.gz && \
+    wget https://artifacts.elastic.co/downloads/logstash/logstash-6.5.1.tar.gz && \
     wget http://geolite.maxmind.com/download/geoip/database/GeoLite2-ASN.tar.gz && \
-    tar xvfz logstash-6.4.3.tar.gz --strip-components=1 -C /usr/share/logstash/ && \
+    tar xvfz logstash-6.5.1.tar.gz --strip-components=1 -C /usr/share/logstash/ && \
     /usr/share/logstash/bin/logstash-plugin install logstash-filter-translate && \
     /usr/share/logstash/bin/logstash-plugin install logstash-output-syslog && \
     tar xvfz GeoLite2-ASN.tar.gz --strip-components=1 -C /usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-filter-geoip-5.0.3-java/vendor/ && \
@@ -42,6 +42,7 @@ RUN apk -U --no-cache add \
 # Clean up
     apk del --purge wget && \
     rm -rf /root/* && \
+    rm -rf /tmp/* && \
     rm -rf /var/cache/apk/*
 
 # Healthcheck
@@ -49,4 +50,4 @@ HEALTHCHECK --retries=10 CMD curl -s -XGET 'http://127.0.0.1:9600'
 
 # Start logstash
 #USER logstash:logstash
-CMD update.sh && exec /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/logstash.conf
+CMD update.sh && exec /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/logstash.conf --java-execution