Merge pull request SharePoint#8809 from johnnycardy/patch-1

Update deploy-web-part-to-cdn.md

Author: andrewconnell

docs/images/deploy-create-cdn-cache-control-header.png

@@ -1,7 +1,7 @@
 ---
 title: Deploy your SharePoint client-side web part to Azure CDN
 description: Create a new sample web part and deploy its assets to an Azure CDN instead of using the default Office 365 CDN as the hosting solution.
-ms.date: 06/13/2022
+ms.date: 03/08/2023
 ---
 # Deploy your SharePoint client-side web part to Azure CDN
 
@@ -64,6 +64,10 @@ Create a new CDN profile and associate the CDN endpoint with this BLOB container
 
     ![Screenshot of create CDN endpoint](../../../images/deploy-create-cdn-endpoint.png)
 
+1. To allow scripts to be cached by the SharePoint service worker, add an appropriate Cache-Control response header to the CDN endpoint.
+
+    ![Screenshot of add a cache control header](../../../images/deploy-create-cdn-cache-control-header.png)
+
 Because you associated the CDN endpoint with your storage account, you can also access the BLOB container at the following URL: **`http://spfxsamples.azureedge.net/azurehosted-webpart/`**
 
 Note, however, that you have not yet deployed the files.