add helper script build-install-local.sh

This helper script is used to build and install an 'app-only' version of the
package onto the local system. This is intendend to be used on the VM as a way
to quickly test new updates to the configuration files using images already
available on the system. This is MUCH faster than packaging with images.

build-install-local.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+LOCATION="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+# build an app-only package (ie don't include images) and store the package path
+echo "building app-only package"
+package=$(${LOCATION}/package --app | awk -F'saved package: ' '/^saved package: / {print $2}')
+echo "generated package: {package}"
+
+# use a temp folder for unpacking and make sure to clean up when done
+tmp="/tmp/build-install-local-$(date +%s)"
+echo "prepping temp folder: {tmp}"
+rm -rf $tmp
+mkdir -p $tmp
+trap 'rm -rf $tmp' EXIT
+
+# unpack to temp folder
+echo "unpacking app package: $package"
+tar xf $package -C $tmp
+
+# install package
+echo "installing package"
+${tmp}/*/install.sh
+
+echo "done."