Custom script extension with N-1 nodes for the cluster

Custom script extension with N-1 Nodes and the last node in the cluster.json

{
        "name": "[concat('cluster-node', copyindex())]",
        "type": "Microsoft.Resources/deployments",
        "apiVersion": "2015-01-01",
        "dependsOn": [
            "storageAccountsLoop"
        ],
        "copy": {
            "name": "clusterNodesLoop",
            "count": "[variables('clusterSpec').clusterSizeMinusOne]"
        },
        "properties": {
            "mode": "Incremental",
            "templateLink": {
                "uri": "[variables('clusterSpec').vmTemplate]",
                "contentVersion": "1.0.0.0"
            },
            "parameters": {
                "commonSettings": {
                    "value": "[variables('commonSettings')]"
                },
                "networkSettings": {
                    "value": "[variables('networkSettings')]"
                },
                "machineSettings": {
                    "value": "[variables('machineSettings')]"
                },
                "storageAccountName": {
                    "value": "[concat(parameters('storageAccountNamePrefix'), variables(concat('storageAccountSuffixForNode', parameters('tshirtSize'), copyindex())))]"
                },
                "nodeId": {
                    "value": "[copyindex()]"
                },
                "vmSize": {
                    "value": "[variables('clusterSpec').vmSize]"
                },
                "vmScripts": {
                    "value": "[variables('vmScripts')]"
                },
                "commandToExecute": {
                    "value": "[variables('vmScripts').installCommand]"
                }
            }
        }
    }, {
        "name": "last-cluster-node",
        "type": "Microsoft.Resources/deployments",
        "apiVersion": "2015-01-01",
        "dependsOn": [
            "clusterNodesLoop"
        ],
        "properties": {
            "mode": "Incremental",
            "templateLink": {
                "uri": "[variables('clusterSpec').vmTemplate]",
                "contentVersion": "1.0.0.0"
            },
            "parameters": {
                "commonSettings": {
                    "value": "[variables('commonSettings')]"
                },
                "networkSettings": {
                    "value": "[variables('networkSettings')]"
                },
                "machineSettings": {
                    "value": "[variables('machineSettings')]"
                },
                "storageAccountName": {
                    "value": "[concat(parameters('storageAccountNamePrefix'), variables(concat('storageAccountSuffixForNode', parameters('tshirtSize'), variables('clusterSpec').lastNodeId)))]"
                },
                "nodeId": {
                    "value": "[variables('clusterSpec').lastNodeId]"
                },
                "vmSize": {
                    "value": "[variables('clusterSpec').vmSize]"
                },
                "vmScripts": {
                    "value": "[variables('vmScripts')]"
                },
                "commandToExecute": {
                    "value": "[variables('vmScripts').setupCommand]"
                }
            }
        }
    }