Typo fixed

filesystem/entrypoint-hooks.sh

@@ -428,7 +428,7 @@ Charset=utf8" > /etc/odbc.ini
     fi
   done
   echo "---> adding asterisk manager user..."
-  if [ ! -z "${AMI_USERNAME}" && ! -z "${AMI_SECRET}" ]; then
+  if [[ ! -z "${AMI_USERNAME}" && ! -z "${AMI_SECRET}" ]]; then
     echo "---> adding asterisk manager user ${AMI_USERNAME}..."
     set +H
     echo "[${AMI_USERNAME}]