Update Dockerfile

Dockerfile

@@ -14,7 +14,7 @@ RUN apk add --no-cache openssl
 # Export HTTP & Transport
 EXPOSE 9200 9300
 
-ENV ES_VERSION 6.6.2
+ENV ES_VERSION 6.8.2
 
 ENV DOWNLOAD_URL "https://artifacts.elastic.co/downloads/elasticsearch"
 ENV ES_TARBAL "${DOWNLOAD_URL}/elasticsearch-${ES_VERSION}.tar.gz"
@@ -85,13 +85,13 @@ COPY /misc/wait_until_started.sh /
 COPY run.sh /
 
 # Install search-guard-6
-RUN ./bin/elasticsearch-plugin install -b com.floragunn:search-guard-6:6.6.2-24.3
+RUN ./bin/elasticsearch-plugin install -b com.floragunn:search-guard-6:6.8.2-25.4
 
 # Install s3 repository plugin
 RUN ./bin/elasticsearch-plugin install repository-s3 --batch
 
 # Install prometheus plugin
-RUN ./bin/elasticsearch-plugin install --batch https://github.com/vvanholl/elasticsearch-prometheus-exporter/releases/download/6.6.2.0/prometheus-exporter-6.6.2.0.zip
+RUN ./bin/elasticsearch-plugin install --batch https://github.com/vvanholl/elasticsearch-prometheus-exporter/releases/download/6.8.2.0/prometheus-exporter-6.8.2.0.zip
 
 # Volume for Elasticsearch data
 VOLUME ["/data"]