Merge pull request #90607 from MicrosoftDocs/Karishma-Tiwari-MSFT-patch-3

(Azure CXP Team) resolves MicrosoftDocs/azure-docs#90300

Author: Jak-MS

articles/container-registry/container-registry-authentication.md

@@ -112,6 +112,8 @@ Using `Connect-AzContainerRegistry` with Azure identities provides [Azure role-b
 
 If you assign a [service principal](../active-directory/develop/app-objects-and-service-principals.md) to your registry, your application or service can use it for headless authentication. Service principals allow [Azure role-based access control (Azure RBAC)](../role-based-access-control/role-assignments-portal.md) to a registry, and you can assign multiple service principals to a registry. Multiple service principals allow you to define different access for different applications.
 
+ACR authentication token gets created upon login to the ACR, and is refreshed upon subsequent operations. The time to live for that token is 3 hours.
+
 The available roles for a container registry include:
 
 * **AcrPull**: pull