Pull the latest docker images in the postinstall script

This way an 'update' will allow us to test the docker images easily

postinstall/postinstall.sh

@@ -118,6 +118,7 @@ $SRCDIR/postinstall/setup_collectd.sh
 
 echo "=== Setup haraka mail relay ==="
 docker rm -f haraka || true
+docker pull girish/haraka:0.1
 HARAKA_CONTAINER_ID=$(docker run --restart=always -d --name="haraka" --cap-add="NET_ADMIN"\
     -p 127.0.0.1:25:25 \
     -h $DOMAIN_NAME \
@@ -129,13 +130,14 @@ echo "=== Setup MySQL addon ==="
 docker rm -f mysql || true
 MYSQL_ROOT_PASSWORD=$(pwgen -1 -s)
 DOCKER0_IP=$( /sbin/ifconfig docker0 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}')
+docker pull girish/mysql:0.1
 MYSQL_CONTAINER_ID=$(docker run --restart=always -d --name="mysql" \
     -p 127.0.0.1:3306:3306 \
     -h "$DOMAIN_NAME" \
     -e MYSQL_ROOT_PASSWORD="$MYSQL_ROOT_PASSWORD" \
     -e MYSQL_ROOT_HOST="$DOCKER0_IP" \
     -v "$MYSQL_DIR:/var/lib/mysql" girish/mysql:0.1)
-echo "MySQL container id: $HARAKA_CONTAINER_ID"
+echo "MySQL container id: $MYSQL_CONTAINER_ID"
 
 echo "==== Creating cloudron.conf ===="
 sudo -u yellowtent -H bash <<EOF

postinstall/setup_collectd.sh

@@ -14,6 +14,7 @@ GRAPHITE_DIR="/home/yellowtent/data/graphite"
 mkdir -p $GRAPHITE_DIR
 
 docker rm -f graphite || true
+docker pull girish/graphite:0.2
 docker run --restart=always -d --name="graphite" \
     -p 127.0.0.1:2003:2003 \
     -p 127.0.0.1:2004:2004 \