From 5124cbd0980dcd9deb64a1f43193edea9b86cb71 Mon Sep 17 00:00:00 2001
From: Christof Marti <chrmarti@microsoft.com>
Date: Mon, 24 Jul 2023 11:35:09 +0200
Subject: [PATCH] Preserve binary files (#599)

---
 src/spec-configuration/containerTemplatesOCI.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/spec-configuration/containerTemplatesOCI.ts b/src/spec-configuration/containerTemplatesOCI.ts
index acd40a70..1c57b244 100644
--- a/src/spec-configuration/containerTemplatesOCI.ts
+++ b/src/spec-configuration/containerTemplatesOCI.ts
@@ -89,8 +89,11 @@ export async function fetchTemplate(params: CommonParams, selectedTemplate: Sele
 		const filePath = path.join(templateDestPath, f);
 		if (await isLocalFile(filePath)) {
 			const fileContents = await readLocalFile(filePath);
-			const fileContentsReplaced = replaceTemplatedValues(output, fileContents.toString(), userSelectedOptions);
-			await writeLocalFile(filePath, Buffer.from(fileContentsReplaced));
+			const originalContent = fileContents.toString();
+			const fileContentsReplaced = replaceTemplatedValues(output, originalContent, userSelectedOptions);
+			if (fileContentsReplaced !== originalContent) {
+				await writeLocalFile(filePath, Buffer.from(fileContentsReplaced));
+			}
 		} else {
 			output.write(`Could not find templated file '${f}'.`, LogLevel.Error);
 		}