[es] Upgrade to 5.3.0

For #126

elasticsearch/Dockerfile

@@ -4,7 +4,7 @@ MAINTAINER itzg
 
 RUN apk -U add bash
 
-ENV ES_VERSION=5.2.2
+ENV ES_VERSION=5.3.0
 
 ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp/es.tgz
 RUN cd /usr/share && \

minecraft-server/Dockerfile

@@ -40,6 +40,6 @@ ENTRYPOINT [ "/start" ]
 
 ENV UID=1000 GID=1000 \
     MOTD="A Minecraft Server Powered by Docker" \
-    JVM_XX_OPTS="-XX:+UseG1GC" MAX_MEMORY="1G" \
+    JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
     TYPE=VANILLA VERSION=LATEST FORGEVERSION=RECOMMENDED LEVEL=world PVP=true DIFFICULTY=easy \
     LEVEL_TYPE=DEFAULT GENERATOR_SETTINGS= WORLD= MODPACK= ONLINE_MODE=TRUE CONSOLE=true

minecraft-server/README.md

@@ -608,11 +608,16 @@ By default, server checks connecting players against Minecraft's account databas
 
 ### Memory Limit
 
-By default the image declares a Java memory limit of 1 GB. That can be adjusted
-higher (or lower) by setting the `MAX_MEMORY` environment variable. For example,
-the following increases the memory limit to 8 GB:
+By default, the image declares a Java initial and maximum memory limit of 1 GB. There are several
+ways to adjust the memory settings:
 
-    docker run -e MAX_MEMORY=8G ...
+* `MEMORY`, "1G" by default, can be used to adjust both initial (`Xms`) and max (`Xmx`)
+  memory settings of the JVM
+* `INIT_MEMORY`, independently sets the initial heap size
+* `MAX_MEMORY`, independently sets the max heap size
+
+The values of all three are passed directly to the JVM and support format/units as
+`<size>[g|G|m|M|k|K]`.
 
 ### /data ownership
 

minecraft-server/start-minecraft.sh

@@ -189,7 +189,7 @@ function installFTB {
   echo "Unpacking FTB server modpack ${srv_modpack} ..."
   local ftb_dir=/data/FeedTheBeast
   mkdir -p ${ftb_dir}
-  unzip -u -o ${srv_modpack} -d ${ftb_dir}
+  unzip -o ${srv_modpack} -d ${ftb_dir}
   cp -f /data/eula.txt ${ftb_dir}/eula.txt
   FTB_SERVER_START=${ftb_dir}/ServerStart.sh
   chmod a+x ${FTB_SERVER_START}
@@ -491,10 +491,10 @@ else
   EXTRA_ARGS=""
 fi
 
-if [[ ! -z $MAX_MEMORY ]]; then
-  # put prior JVM_OPTS at the end to give any memory settings there higher precedence
-  JVM_OPTS="-Xms${MAX_MEMORY} -Xmx${MAX_MEMORY} ${JVM_OPTS}"
-fi
+# put these prior JVM_OPTS at the end to give any memory settings there higher precedence
+echo "Setting initial memory to ${INIT_MEMORY:-${MEMORY}} and max to ${MAX_MEMORY:-${MEMORY}}"
+JVM_OPTS="-Xms${INIT_MEMORY:-${MEMORY}} -Xmx${MAX_MEMORY:-${MEMORY}} ${JVM_OPTS}"
+
 set -x
 if [[ ${TYPE} == "FEED-THE-BEAST" ]]; then
     echo "Running FTB server modpack start ..."