@@ -11,6 +11,10 @@ if ! command -v curl &> /dev/null; then

 	echo >&2 'error: "curl" not found!'

 	exit 1

 fi

+if ! command -v jq &> /dev/null; then

+	echo >&2 'error: "jq" not found!'

+	exit 1

+fi

 usage() {

 	echo "usage: $0 dir image[:tag][@digest] ..."