paperless-ng: check for required commands

images/paperless-ng/paperless-ng.sh

@@ -26,6 +26,20 @@ if [[ ! -d "${output_dir}" ]]; then
 	exit 1;
 fi
 
+
+# $1 - Command name to check for
+check_command() {
+	which $1 >/dev/null 2>&1; exit_code=$?
+	if [[ "${exit_code}" -ne 0 ]]; then
+		log_msg "Error: Couldn't locate $1. Make sure it's installed and in your path.";
+	fi
+}
+
+check_command mktemp;
+check_command curl;
+check_command jq;
+
+
 temp_dir="$(mktemp --tmpdir -d "docker-images-paperless-ng-XXXXXXX")";
 on_exit() {
 	log_msg "Cleaning up";