Add a release steps file (#2240)

Procfile

@@ -1,2 +1,2 @@
-release: cd network-api && python ./manage.py migrate --no-input && python ./manage.py block_inventory && python ./manage.py sync_page_translation_fields && python ./manage.py update_translation_fields && python ./manage.py clear_cache
+release: ./release-steps.sh
 web: cd network-api && gunicorn networkapi.wsgi:application

release-steps.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+cd network-api
+
+# Django Migrations
+python ./manage.py migrate --no-input
+
+# Wagtail block inventory
+python ./manage.py block_inventory
+
+# Wagtail translations
+python ./manage.py sync_page_translation_fields
+python ./manage.py update_translation_fields
+
+# Clear cache for BuyersGuide
+python ./manage.py clear_cache