added support for Windows Custom Image URL

parts/params.t

@@ -204,7 +204,18 @@
     {{end}}
   {{end}}
 {{end}}{{end}}
-{{if .IsWindows}}{{if .WindowsProfile.HasSecrets}}
+{{if .IsWindows}}
+{{if HasWindowsCustomImage}}
+    ,
+    "windowsImageSourceUrl": {
+      "defaultValue": "",
+      "metadata": {
+        "description": "The source of the generalized blob which will be used to create a custom windows image."
+      },
+      "type": "string"
+    }
+{{end}}
+{{if .WindowsProfile.HasSecrets}}
   {{range  $vIndex, $vault := .WindowsProfile.Secrets}}
     ,
     "windowsKeyVaultID{{$vIndex}}": {
@@ -229,4 +240,5 @@
       }
     {{end}}
   {{end}}
-{{end}} {{end}}
+{{end}}
+{{end}}

parts/resources.t

@@ -79,6 +79,23 @@
       },
       "type": "Microsoft.Network/networkInterfaces"
     },
+{{if HasWindowsCustomImage}}
+    {"type": "Microsoft.Compute/images",
+      "apiVersion": "[variables('apiVersionDefault')]",
+      "name": "CustomWindowsImage",
+      "location": "[parameters('location')]",
+      "properties": {
+        "storageProfile": {
+          "osDisk": {
+            "osType": "Windows",
+            "osState": "Generalized",
+            "blobUri": "[parameters('windowsImageSourceUrl')]",
+            "storageAccountType": "Standard_LRS"
+          }
+        }
+      }
+    },
+{{end}}
     {
       "apiVersion": "[variables('apiVersionDefault')]",
       "dependsOn": [
@@ -115,7 +132,13 @@
           {{end}}{{end}}
         },
         "storageProfile": {
+{{if HasWindowsCustomImage}}
+        "imageReference": {
+          "id": "[resourceId('Microsoft.Compute/images','CustomWindowsImage')]"
+        },
+{{else}}
           "imageReference": "[variables('imageReference')[parameters('osImageName')]]",
+{{end}}
           "osDisk": {
             "caching": "ReadWrite",
             "createOption": "FromImage",

pkg/engine/params.go

@@ -45,6 +45,9 @@ func getParameters(cs *api.OpenEnclave, generatorCode string) (paramsMap, error)
 		addValue(parametersMap, "authenticationType", "password")
 		addValue(parametersMap, "adminUsername", properties.WindowsProfile.AdminUsername)
 		addValue(parametersMap, "adminPasswordOrKey", properties.WindowsProfile.AdminPassword)
+		if properties.WindowsProfile.HasCustomImage() {
+			addValue(parametersMap, "windowsImageSourceUrl", properties.WindowsProfile.WindowsImageSourceURL)
+		}
 	}
 
 	if properties.LinuxProfile != nil && !cs.OeSdkExcluded {