Map DRUPAL_SITE_URI to APP_HOSTNAME for postfix, nginx

Author: JacobSanford

build/scripts/pre-init.d/05_map_drupal_uri_to_app_hostname.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+set -eu
+
+# If SITE_URI exists and APP_HOSTNAME is not already set,
+# map SITE_URI -> APP_HOSTNAME.
+if [ -n "${SITE_URI:-}" ] && [ -z "${APP_HOSTNAME:-}" ]; then
+  export APP_HOSTNAME="$SITE_URI"
+fi
+