upgraded to Elasticsearch 2.3.1 and Logstash 2.3.1

also readded auto-reload option for Logstash (see #30 for background information)

Dockerfile

@@ -1,5 +1,5 @@
 # Dockerfile for ELK stack
-# Elasticsearch 2.3.0, Logstash 2.3.0, Kibana 4.5.0
+# Elasticsearch 2.3.1, Logstash 2.3.1, Kibana 4.5.0
 
 # Build with:
 # docker build -t <repo-user>/elk .
@@ -9,7 +9,7 @@
 
 FROM phusion/baseimage
 MAINTAINER Sebastien Pujadas http://pujadas.net
-ENV REFRESHED_AT 2016-03-04
+ENV REFRESHED_AT 2016-04-07
 
 ###############################################################################
 #                                INSTALLATION
@@ -25,15 +25,15 @@ RUN echo deb http://packages.elasticsearch.org/elasticsearch/2.x/debian stable m
 
 RUN apt-get update -qq \
  && apt-get install -qqy \
-		elasticsearch=2.3.0 \
+		elasticsearch=2.3.1 \
 		openjdk-7-jdk \
  && apt-get clean
 
 
 ### install Logstash
 
 ENV LOGSTASH_HOME /opt/logstash
-ENV LOGSTASH_PACKAGE logstash-2.3.0.tar.gz
+ENV LOGSTASH_PACKAGE logstash-2.3.1.tar.gz
 
 RUN mkdir ${LOGSTASH_HOME} \
  && curl -O https://download.elasticsearch.org/logstash/logstash/${LOGSTASH_PACKAGE} \

logstash-init

@@ -37,7 +37,7 @@ LS_LOG_FILE="${LS_LOG_DIR}/$name.log"
 LS_CONF_DIR=/etc/logstash/conf.d
 LS_OPEN_FILES=16384
 LS_NICE=19
-LS_OPTS=""
+LS_OPTS="--auto-reload"
 
 [ -r /etc/default/$name ] && . /etc/default/$name
 [ -r /etc/sysconfig/$name ] && . /etc/sysconfig/$name