add custom install script to clear v1 data

The script `install.sh` largely copies the template from the hosted-app-utils
project, with some key changes:
1. replace template parameters (`{{VAR}}`) with hard-coded values
2. define variables for org, app, install root, etc
3. if old version detected, remove data folder before installing update

The modified script will:
1. delete v1 data
2. update normally when v2 or newer installations are present

install.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+#
+# Copyright (C) Wendepunkt Medical Innovations, Inc - All Rights Reserved.
+# Unauthorized copying of this file, via any medium is strictly prohibited.
+# Proprietary and confidential
+#
+# For information: dev@signalytic.ca
+#
+
+#
+# Install the streamline-emr application
+#
+# The caller of this script must check the exit value and possibly do a 
+# roll-back if it is non-zero. If the exit value is non-zero services have not
+# been restarted.
+#
+# Note: This version resets data from v1 installations
+
+LOCATION="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+if [ "$EUID" -ne 0 ]
+  then echo "Please run as root"
+  exit 1
+fi
+
+set -e
+
+APP_SLUG="streamline_emr"
+ORG_SLUG="streamline"
+INSTALL_ROOT="/var/signalytic/clientapps/${ORG_SLUG}/${APP_SLUG}"
+VERSION_FILE="${INSTALL_ROOT}/version"
+DATA_ROOT="${INSTALL_ROOT}/data"
+
+# stop the application (if installed)
+if [ -f ${INSTALL_ROOT}/stop ]; then
+  ${INSTALL_ROOT}/stop
+fi
+
+# reset data for any v1 installations
+if grep -q "^1." ${VERSION_FILE}; then
+  echo "v1 installation detected - resetting data"
+  rm -rf ${DATA_ROOT}
+fi
+
+# copy root files (if present)
+if [ -d "${LOCATION}/root" ] && [ -n "$(ls -A ${LOCATION}/root)" ]; then
+  echo "importing root files"
+  cp -rfv $LOCATION/root/* /
+fi
+
+# import docker images (if present)
+for f in $(find $LOCATION/images -name "*.img" 2>/dev/null);do
+  echo "importing docker image: $f"
+  docker load -i $f
+done
+for f in $(find $LOCATION/images -name "*.img.xz" 2>/dev/null);do
+  echo "importing docker image: $f"
+  xz -d -c $f | docker load
+done
+
+# start the application
+${INSTALL_ROOT}/start