refactor: check if an object has already content disposition header don't copy it again

src/index.js

@@ -609,6 +609,13 @@ async function copyWithNewMetadata(client, bucket, key, filename) {
 		}),
 	);
 
+	if (head.ContentDisposition) {
+		logger.debug(
+			newKey,
+			`object: ${key} has content disposition header: ${head.ContentDisposition}`,
+		);
+	}
+
 	const result = await client.send(
 		new CopyObjectCommand({
 			Bucket: bucket,