How to manage VMs created through azure test drive

Question

I have a test drive deployed having a cold and a hot instance. It always keeps running two virtual machines after having a test drive. Whenever a new test drive is requested, it creates a third virtual machine. I am confused with it. This is not the intended behavior. It should have only one running VM and the second one should start for a cold instance when the hot instance is not available.

What could be causing the issue? I have used arm template to deploy test drive.

Here is my template to deploy test drive

    {
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "metadata": {
    "_generator": {
      "name": "bicep",
      "version": "0.8.9.13224",
      "templateHash": "15559643551456468043"
    }
  },
  "parameters": {
    "vmName": {
      "type": "string",
      "defaultValue": "TestDriveVM",
      "metadata": {
        "description": "The name of you Virtual Machine."
      }
    },
    "adminUsername": {
      "defaultValue":"",
      "type": "string",
      "metadata": {
        "description": "Username for the Virtual Machine."
      }
    },
    "authenticationType": {
      "type": "string",
      "defaultValue": "password",
      "allowedValues": [
        "sshPublicKey",
        "password"
      ],
      "metadata": {
        "description": "Type of authentication to use on the Virtual Machine. SSH key is recommended."
      }
    },
    "adminPasswordOrKey": {
      "type": "secureString",
      "defaultValue":"",
      "metadata": {
        "description": "SSH Key or password for the Virtual Machine. SSH key is recommended."
      }
    },
    "dnsLabelPrefix": {
      "type": "string",
      
      "defaultValue": "[toLower(format('{0}-{1}', parameters('vmName'), uniqueString(resourceGroup().id)))]",
      "metadata": {
        "description": "Unique DNS Name for the Public IP used to access the Virtual Machine."
      }
    },
    "ubuntuOSVersion": {
      "type": "string",
      "defaultValue": "18.04-LTS",
      "allowedValues": [
        "12.04.5-LTS",
        "14.04.5-LTS",
        "16.04.0-LTS",
        "18.04-LTS"
      ],
      "metadata": {
        "description": "The Ubuntu version for the VM. This will pick a fully patched image of this given Ubuntu version."
      }
    },
    "location": {
      "type": "string",
      "defaultValue": "centralus",
      "metadata": {
        "description": "Location for all resources."
      }
    },
    "vmSize": {
      "type": "string",
      "defaultValue": "Standard_D2ads_v5",
      "metadata": {
        "description": "The size of the VM"
      }
    },
    "virtualNetworkName": {
      "type": "string",
      "defaultValue": "vNet",
      "metadata": {
        "description": "Name of the VNET"
      }
    },
    "subnetName": {
      "type": "string",
      "defaultValue": "Subnet",
      "metadata": {
        "description": "Name of the subnet in the virtual network"
      }
    },
    "networkSecurityGroupName": {
      "type": "string",
      "defaultValue": "SecGroupNet",
      "metadata": {
        "description": "Name of the Network Security Group"
      }
    },
       

        "commandToExecute": {
      "type": "string",
      "defaultValue": "git checkout azure-test-drive 
                        sudo ./deploy.sh",
      "metadata": {
        "description": "The command to execute."
      }
    }

  
  },
  "variables": {
    "publicIPAddressName": "[format('{0}PublicIP', parameters('vmName'))]",
    "networkInterfaceName": "[format('{0}NetInt', parameters('vmName'))]",
    "osDiskType": "Standard_LRS",
    "subnetAddressPrefix": "10.1.0.0/24",
    "addressPrefix": "10.1.0.0/16",
    "linuxConfiguration": {
      "disablePasswordAuthentication": true,
      "ssh": {
        "publicKeys": [
          {
            "path": "[format('/home/{0}/.ssh/authorized_keys', parameters('adminUsername'))]",
            "keyData": "[parameters('adminPasswordOrKey')]"
          }
        ]
      }
    }
  },
  "resources": [
    {
      "type": "Microsoft.Network/networkInterfaces",
      "apiVersion": "2020-11-01",
      "name": "[variables('networkInterfaceName')]",
      "location": "[parameters('location')]",
      "properties": {
        "ipConfigurations": [
          {
            "name": "ipconfig1",
            "properties": {
              "subnet": {
                "id": "[resourceId('Microsoft.Network/virtualNetworks/subnets', parameters('virtualNetworkName'), parameters('subnetName'))]"
              },
              "privateIPAllocationMethod": "Dynamic",
              "publicIPAddress": {
                "id": "[resourceId('Microsoft.Network/publicIPAddresses', variables('publicIPAddressName'))]"
              }
            }
          }
        ],
        "networkSecurityGroup": {
          "id": "[resourceId('Microsoft.Network/networkSecurityGroups', parameters('networkSecurityGroupName'))]"
        }
      },
      "dependsOn": [
        "[resourceId('Microsoft.Network/networkSecurityGroups', parameters('networkSecurityGroupName'))]",
        "[resourceId('Microsoft.Network/publicIPAddresses', variables('publicIPAddressName'))]",
        "[resourceId('Microsoft.Network/virtualNetworks/subnets', parameters('virtualNetworkName'), parameters('subnetName'))]"
      ]
    },
    {
      "type": "Microsoft.Network/networkSecurityGroups",
      "apiVersion": "2020-11-01",
      "name": "[parameters('networkSecurityGroupName')]",
      "location": "[parameters('location')]",
      "properties": {
        "securityRules": [
          {
            "name": "SSH",
            "properties": {
              "priority": 1000,
              "protocol": "Tcp",
              "access": "Allow",
              "direction": "Inbound",
              "sourceAddressPrefix": "*",
              "sourcePortRange": "*",
              "destinationAddressPrefix": "*",
              "destinationPortRange": "22"
            }
          },
           { "name": "UI_443",
            "properties": {
              "priority": 1010,
              "protocol": "Tcp",
              "access": "Allow",
              "direction": "Inbound",
              "sourceAddressPrefix": "*",
              "sourcePortRange": "*",
              "destinationAddressPrefix": "*",
              "destinationPortRange": "443"
            }
            }
          
        ]
      }
    },
    {
      "type": "Microsoft.Network/virtualNetworks",
      "apiVersion": "2020-11-01",
      "name": "[parameters('virtualNetworkName')]",
      "location": "[parameters('location')]",
      "properties": {
        "addressSpace": {
          "addressPrefixes": [
            "[variables('addressPrefix')]"
          ]
        }
      }
    },
    {
      "type": "Microsoft.Network/virtualNetworks/subnets",
      "apiVersion": "2020-11-01",
      "name": "[format('{0}/{1}', parameters('virtualNetworkName'), parameters('subnetName'))]",
      "properties": {
        "addressPrefix": "[variables('subnetAddressPrefix')]",
        "privateEndpointNetworkPolicies": "Enabled",
        "privateLinkServiceNetworkPolicies": "Enabled"
      },
      "dependsOn": [
        "[resourceId('Microsoft.Network/virtualNetworks', parameters('virtualNetworkName'))]"
      ]
    },
    {
      "type": "Microsoft.Network/publicIPAddresses",
      "apiVersion": "2020-11-01",
      "name": "[variables('publicIPAddressName')]",
      "location": "[parameters('location')]",
      "sku": {
        "name": "Basic"
      },
      "properties": {
        "publicIPAllocationMethod": "Static",
        "publicIPAddressVersion": "IPv4",
        "dnsSettings": {
          "domainNameLabel": "[parameters('dnsLabelPrefix')]"
        },
        "idleTimeoutInMinutes": 4
      }
    },
    {
      "type": "Microsoft.Compute/virtualMachines",
      "apiVersion": "2021-11-01",
      "name": "[parameters('vmName')]",
      "location": "[parameters('location')]",
      "properties": {
        "hardwareProfile": {
          "vmSize": "[parameters('vmSize')]"
          
        },
        "storageProfile": {
          "osDisk": {
            "createOption": "FromImage",
            "managedDisk": {
              "storageAccountType": "[variables('osDiskType')]"
            }
          },
          "imageReference": {
            "publisher": "Canonical",
            "offer": "UbuntuServer",
            "sku": "[parameters('ubuntuOSVersion')]",
            "version": "latest"
          }
        },
        "networkProfile": {
          "networkInterfaces": [
            {
              "id": "[resourceId('Microsoft.Network/networkInterfaces', variables('networkInterfaceName'))]"
            }
          ]
        },
        "osProfile": {
          "computerName": "[parameters('vmName')]",
          "adminUsername": "[parameters('adminUsername')]",
          "adminPassword": "[parameters('adminPasswordOrKey')]",
          "linuxConfiguration": "[if(equals(parameters('authenticationType'), 'password'), null(), variables('linuxConfiguration'))]"
        
        },
                "priority": "Spot",
                "evictionPolicy": "Deallocate",
                "billingProfile": {
                    "maxPrice": -1
                }

      },
      "dependsOn": [
        "[resourceId('Microsoft.Network/networkInterfaces', variables('networkInterfaceName'))]"
      ]
    },
   {
      "type": "Microsoft.Compute/virtualMachines/extensions",
      "name": "[concat(parameters('vmName'),'/installcustomscript')]",
      "apiVersion": "2020-12-01",
      "location": "[parameters('location')]",
      "dependsOn": [
        "[resourceId('Microsoft.Compute/virtualMachines/', parameters('vmName'))]"
      ],
      "properties": {
        "publisher": "Microsoft.Azure.Extensions",
        "type": "CustomScript",
        "typeHandlerVersion": "2.0",
        "autoUpgradeMinorVersion": true,
        "settings": {
          "commandToExecute": "[parameters('commandToExecute')]"
        }
      }
    }
    ],
  "functions": [

  ],
  "outputs": {
    "adminUsername": {
      "type": "string",
      "value": "[parameters('adminUsername')]"
    },
    "hostname": {
      "type": "string",
      "value": "[reference(resourceId('Microsoft.Network/publicIPAddresses', variables('publicIPAddressName'))).dnsSettings.fqdn]"
    },
    "sshCommand": {
      "type": "string",
      "value": "[format('ssh {0}@{1}', parameters('adminUsername'), reference(resourceId('Microsoft.Network/publicIPAddresses', variables('publicIPAddressName'))).dnsSettings.fqdn)]"
    }
  }}

 

Thanks