azure-arm-template: set CustomScriptExtension output

We want to know the output that the CustomScriptExtension gives us,
so let's output it from the ARM template. That way, we can access
it from the azure/arm-deploy GitHub Action in a follow-up commit.

Signed-off-by: Dennis Ameling <[email protected]>

Author: dennisameling

azure-self-hosted-runners/azure-arm-template.json

@@ -108,7 +108,12 @@
         "nicName": "[concat(parameters('virtualMachineName'), '-nic')]",
         "vnetName": "[concat(parameters('virtualMachineName'), '-vnet')]",
         "vnetId": "[resourceId(resourceGroup().name,'Microsoft.Network/virtualNetworks', concat(parameters('virtualMachineName'), '-vnet'))]",
-        "subnetRef": "[concat(variables('vnetId'), '/subnets/', parameters('subnetName'))]"
+        "subnetRef": "[concat(variables('vnetId'), '/subnets/', parameters('subnetName'))]",
+        "UriFileNamePieces": "[split(parameters('postDeploymentPsScriptUrl'), '/')]",
+        "firstFileNameString": "[variables('UriFileNamePieces')[sub(length(variables('UriFileNamePieces')), 1)]]",
+        "firstFileNameBreakString": "[split(variables('firstFileNameString'), '?')]",
+        "firstFileName": "[variables('firstFileNameBreakString')[0]]",
+        "postDeploymentScriptArguments": "[concat('-GitHubActionsRunnerToken ', parameters('githubActionsRunnerToken'), ' -GithubActionsRunnerRegistrationUrl ', parameters('githubActionsRunnerRegistrationUrl'), ' -GithubActionsRunnerName ', parameters('virtualMachineName'), ' -StopService ', parameters('stopService'), ' -GitHubActionsRunnerPath ', parameters('githubActionsRunnerPath'))]"
     },
     "resources": [
         {
@@ -243,38 +248,35 @@
             ]
         },
         {
-            "name": "Microsoft.CustomScriptExtension",
-            "apiVersion": "2015-01-01",
-            "type": "Microsoft.Resources/deployments",
+            "type": "Microsoft.Compute/virtualMachines/extensions",
+            "apiVersion": "2020-12-01",
+            "name": "[concat(parameters('virtualMachineName'), '/CustomScriptExtension')]",
+            "dependsOn": [
+                "[resourceId('Microsoft.Compute/virtualMachines/', parameters('virtualMachineName'))]"
+            ],
+            "location": "[parameters('location')]",
             "properties": {
-                "mode": "incremental",
-                "templateLink": {
-                    "uri": "https://catalogartifact.azureedge.net/publicartifacts/Microsoft.CustomScriptExtension-arm-2.0.57/MainTemplate.json"
+                "publisher": "Microsoft.Compute",
+                "type": "CustomScriptExtension",
+                "typeHandlerVersion": "1.9",
+                "autoUpgradeMinorVersion": true,
+                "settings": {
+                    "fileUris": "[split(parameters('postDeploymentPsScriptUrl'), ' ')]"
                 },
-                "parameters": {
-                    "fileUris": {
-                        "value": "[parameters('postDeploymentPsScriptUrl')]"
-                    },
-                    "vmName": {
-                        "value": "[parameters('virtualMachineName')]"
-                    },
-                    "location": {
-                        "value": "[parameters('location')]"
-                    },
-                    "arguments": {
-                        "value": "[concat('-GitHubActionsRunnerToken ', parameters('githubActionsRunnerToken'), ' -GithubActionsRunnerRegistrationUrl ', parameters('githubActionsRunnerRegistrationUrl'), ' -GithubActionsRunnerName ', parameters('virtualMachineName'), ' -StopService ', parameters('stopService'), ' -GitHubActionsRunnerPath ', parameters('githubActionsRunnerPath'))]"
-                    }
+                "protectedSettings": {
+                    "commandToExecute": "[concat('powershell -ExecutionPolicy Unrestricted -File ', variables('firstFileName'), ' ', variables('postDeploymentScriptArguments'))]"
                 }
-            },
-            "dependsOn": [
-                "[resourceId('Microsoft.Compute/virtualMachines/', parameters('virtualMachineName'))]"
-            ]
+            }
         }
     ],
     "outputs": {
         "adminUsername": {
             "type": "string",
             "value": "[parameters('adminUsername')]"
+        },
+        "customScriptInstanceView": {
+            "type": "object",
+            "value": "[reference(resourceId('Microsoft.Compute/virtualMachines/extensions', parameters('virtualMachineName'), 'CustomScriptExtension')).instanceView]"
         }
     }
 }