azuredeploy.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
   "parameters": {
    "labName": {
      "type": "string"
    }},
  "variables": {
    "labVirtualNetworkName": "[concat('BoC', parameters('labName'))]",
    "artifactRepositoryName": "[concat('Repo-', uniqueString(subscription().subscriptionId))]"
  },
  "resources": [
    {
      "apiVersion": "2018-10-15-preview",
      "type": "Microsoft.DevTestLab/labs",
      "name": "[parameters('labName')]",
      "location": "[resourceGroup().location]",
      "resources": [
        {
          "apiVersion": "2018-10-15-preview",
          "name": "[variables('labVirtualNetworkName')]",
          "type": "virtualNetworks",
          "dependsOn": [
            "[resourceId('Microsoft.DevTestLab/labs', parameters('labName'))]"
          ]
        }
      ]
    }
  ],
  "outputs": {
    "labId": {
      "type": "string",
      "value": "[resourceId('Microsoft.DevTestLab/labs', parameters('labName'))]"
    }
  }
}