OpenJDK-8 Alpine image

Dockerfile

@@ -1,15 +1,15 @@
 # HBase in Docker
 #
-# Version 0.3
+# Version 0.4
 
 # http://docs.docker.io/en/latest/use/builder/
 
-FROM ubuntu:xenial
+FROM openjdk:8-jre-alpine
 MAINTAINER Dave Beckett <dave@dajobe.org>
 
 COPY *.sh /build/
 
-ENV HBASE_VERSION 1.2.4
+ENV HBASE_VERSION 1.2.6
 
 RUN /build/prepare-hbase.sh && \
     cd /opt/hbase && /build/build-hbase.sh \

cleanup-hbase.sh

@@ -2,15 +2,8 @@
 
 . /build/config-hbase.sh
 
-AUTO_ADDED_PACKAGES=`apt-mark showauto`
+apk del $HBASE_BUILD_PACKAGES
 
-apt-get remove --purge -y $HBASE_BUILD_PACKAGES $AUTO_ADDED_PACKAGES
-
-# Install the run-time dependencies
-apt-get install $minimal_apt_get_args $HBASE_RUN_PACKAGES
-
-# . /build/cleanup.sh
 rm -rf /tmp/* /var/tmp/*
 
-apt-get clean
 rm -rf /var/lib/apt/lists/*

config-hbase.sh

@@ -2,23 +2,33 @@
 
 # . /build/config.sh
 
+function get_closest_site() {
+
+DISPATCHER_SITE="http://www.apache.org/dyn/closer.cgi/hbase/"
+
+echo $(curl -s $DISPATCHER_SITE | grep strong | head -n 1 | sed 's|.*href="\(.\+\?\)".*|\1|')
+
+}
+
+
 # This is the definitive site and incredibly slow
-HBASE_DIST="http://archive.apache.org/dist/hbase"
+HBASE_ORIG_DIST="http://archive.apache.org/dist/hbase"
+HBASE_DIST=$HBASE_ORIG_DIST
 # This is a mirror site and faster but every new release breaks all
 # existing links.
 # HBASE_DIST="https://www-us.apache.org/dist/hbase"
+# Uncomment this line to download from the closest site:
+#export USE_DISPATCHER=1
 
 # Prevent initramfs updates from trying to run grub and lilo.
 export INITRD=no
 export DEBIAN_FRONTEND=noninteractive
-export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
-
-minimal_apt_get_args='-y --no-install-recommends'
+export JAVA_HOME=/usr/lib/jvm/default-jvm
 
 
 ## Build time dependencies ##
 
-HBASE_BUILD_PACKAGES="curl"
+HBASE_BUILD_PACKAGES="curl gnupg"
 
 # Core list from docs
 #HBASE_BUILD_PACKAGES="$HBASE_BUILD_PACKAGES "

prepare-hbase.sh

@@ -1,11 +1,29 @@
-#!/bin/sh -x
+#!/bin/sh -xe
 
 . /build/config-hbase.sh
 
-apt-get update -y
-
-apt-get install $minimal_apt_get_args $HBASE_BUILD_PACKAGES
+apk update
+apk add bash $HBASE_BUILD_PACKAGES
 
+mkdir -p /opt
 cd /opt
 
-curl -SL $HBASE_DIST/$HBASE_VERSION/hbase-$HBASE_VERSION-bin.tar.gz | tar -x -z && mv hbase-${HBASE_VERSION} hbase
+if [ -n $USE_DISPATCHER ]
+then
+  HBASE_DIST=$(get_closest_site)
+fi
+
+# download package
+curl -SLO $HBASE_DIST/$HBASE_VERSION/hbase-$HBASE_VERSION-bin.tar.gz 
+# download PGP keys
+curl -SLO $HBASE_ORIG_DIST/KEYS 
+# download checksum
+curl -SL $HBASE_ORIG_DIST/$HBASE_VERSION/hbase-$HBASE_VERSION-bin.tar.gz.asc -o download.asc
+
+# validate the version
+gpg --import KEYS
+gpg --verify download.asc hbase-$HBASE_VERSION-bin.tar.gz
+
+# finally unpack and cleanup
+tar xzf hbase-$HBASE_VERSION-bin.tar.gz && mv hbase-${HBASE_VERSION} hbase
+rm -f hbase-$HBASE_VERSION-bin.tar.gz KEYS download.asc

replace-hostname

@@ -12,12 +12,15 @@ declare -a files=(
 	'/opt/hbase/conf/zoo.cfg'
 )
 
+# enable custom replacement (e.g. service name on k8s)
+REPLACEMENT=${HBASE_SERVICE_NAME:-$HOSTNAME}
+
 for file in "${files[@]}"; do
 	if [ -f "${file}.bak" ]; then
 		cp "${file}.bak" "${file}"
 	else
 		cp "${file}" "${file}.bak"
 	fi
 
-	sed -i "s/hbase-docker/${HOSTNAME}/g" "${file}"
+	sed -i "s/hbase-docker/${REPLACEMENT}/g" "${file}"
 done