diff --git a/content/codespaces/developing-in-a-codespace/rebuilding-the-container-in-a-codespace.md b/content/codespaces/developing-in-a-codespace/rebuilding-the-container-in-a-codespace.md
index 230ea9ec0729..bb0fd901d791 100644
--- a/content/codespaces/developing-in-a-codespace/rebuilding-the-container-in-a-codespace.md
+++ b/content/codespaces/developing-in-a-codespace/rebuilding-the-container-in-a-codespace.md
@@ -53,7 +53,7 @@ If you want to preserve files outside the `/workspaces` directory over a rebuild
 ```json
 {
     "image": "mcr.microsoft.com/devcontainers/base:alpine",
-    "postCreateCommand": ".devcontainer/postCreate.sh"
+    "postCreateCommand": "chmod +x .devcontainer/postCreate.sh && .devcontainer/postCreate.sh"
 }
 ```