Add script that preps an alpine container to run the app

script/alpine_setup

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# script/alpine_setup: Adds all the system packages, directors, users, etc.
+#                      required to run the application on Alpine
+
+# If a command fails, exit the script
+set -e
+
+# Ensure we are in the app root directory (not the /script directory)
+cd "$(dirname "${0}")/.."
+
+APP_USER=${1}
+APP_GROUP=${2}
+
+apk update
+apk upgrade
+
+apk add bash
+
+addgroup -g 8000 -S ${APP_GROUP}
+adduser -u 8010 -D -S -G ${APP_GROUP} ${APP_USER}
+
+echo 'gem: --no-document' > ~/.gemrc