new image style for border

Author: Larry

articles/machine-learning/how-to-enable-virtual-network.md

@@ -169,7 +169,9 @@ You don't need to specify NSGs at the subnet level, because the Azure Batch serv
 
 The NSG rule configuration in the Azure portal is shown in the following images:
 
-[![The inbound NSG rules for Machine Learning Compute](./media/how-to-enable-virtual-network/amlcompute-virtual-network-inbound.png)](./media/how-to-enable-virtual-network/amlcompute-virtual-network-inbound.png#lightbox)
+:::image type="content" source="./media/how-to-enable-virtual-network/amlcompute-virtual-network-inbound.png" alt-text="The inbound NSG rules for Machine Learning Compute" border="true":::
+
+
 
 ![The outbound NSG rules for Machine Learning Compute](./media/how-to-enable-virtual-network/experimentation-virtual-network-outbound.png)
 
@@ -534,7 +536,7 @@ For more information on configuring a network rule, see [Deploy and configure Az
 
     From the overview section of your workspace, the __Registry__ value links to the Azure Container Registry.
 
-    ![Azure Container Registry for the workspace](./media/how-to-enable-virtual-network/azure-machine-learning-container-registry.png)
+    :::image type="content" source="./media/how-to-enable-virtual-network/azure-machine-learning-container-registry.png" alt-text="Azure Container Registry for the workspace" border="true":::
 
     __Azure CLI__