[es] Bump to 5.0.1

* explicitly configure default JVM heap size
* /conf needed ownership fixed
For #112

elasticsearch/Dockerfile

@@ -4,7 +4,7 @@ MAINTAINER itzg
 
 RUN apk -U add bash
 
-ENV ES_VERSION=5.0.0
+ENV ES_VERSION=5.0.1
 
 ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp/es.tgz
 RUN cd /usr/share && \
@@ -16,7 +16,8 @@ EXPOSE 9200 9300
 ENV ES_HOME=/usr/share/elasticsearch-$ES_VERSION \
     DEFAULT_ES_USER=elasticsearch \
     DISCOVER_TRANSPORT_IP=eth0 \
-    DISCOVER_HTTP_IP=eth0
+    DISCOVER_HTTP_IP=eth0 \
+    ES_JAVA_OPTS="-Xms1g -Xmx1g"
 
 RUN adduser -S -s /bin/sh $DEFAULT_ES_USER
 

elasticsearch/README.md

@@ -197,3 +197,17 @@ replacing `eth0` with another interface within the container, if needed.
 The same can be done for publish/binding of the http module by adding:
 
     -e DISCOVERY_HTTP_IP=eth2
+
+## Heap size and other JVM options
+
+By default this image will run Elasticsearch with a Java heap size of 1 GB. If that value
+or any other JVM options need to be adjusted, then replace the `ES_JAVA_OPTS`
+environment variable.
+
+For example, this would allow for the use of 16 GB of heap:
+
+    -e ES_JAVA_OPTS="-Xms16g -Xmx16g"
+
+Refer to [this page](https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html)
+for more information about why both the minimum and maximum sizes were set to
+the same value.

elasticsearch/start

@@ -125,7 +125,7 @@ echo "Starting Elasticsearch with the options $OPTS"
 CMD="$ES_HOME/bin/elasticsearch $OPTS"
 if [ `id -u` = 0 ]; then
   echo "Running as non-root..."
-  chown -R $DEFAULT_ES_USER /data
+  chown -R $DEFAULT_ES_USER /data /conf
   su -c "$CMD" $DEFAULT_ES_USER
 else
   $CMD