adding lightbox coding

Author: v-dirichards

articles/container-apps/ingress-how-to.md

@@ -203,7 +203,7 @@ type: Microsoft.App/containerApps
 
 ::: zone pivot="azure-portal"
 
-:::image type="content" source="media/ingress/additional-tcp-ingress-ports-portal.png" alt-text="Screenshot of adding additional TCP ports for Container Apps ingress through the portal.":::
+:::image type="content" source="media/ingress/additional-tcp-ingress-ports-portal.png" lightbox="media/ingress/additional-tcp-ingress-ports-portal.png" alt-text="Screenshot of adding additional TCP ports for Container Apps ingress through the portal.":::
 
 1. Expand the **Additional TCP ports** section within the Ingress blade.
 2. Add in additional TCP ports that your application will be accepting traffic on in the _Target port_ field. If _Exposed port_ is left empty, this will take from the same value set in _Target port_.