Keyvault acmebot template with custom names + existing components

template.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "appName": {
      "type": "string",
      "metadata": {
        "description": "Name of the new Functions service"
      }
    },
	"appInsightsName": {
      "type": "string",
      "metadata": {
        "description": "Name of the new Insights"
      }
    },
	"appPlanName": {
      "type": "string",
      "metadata": {
        "description": "Name of the existing app plan"
      }
    },
	"storageName": {
      "type": "string",
      "metadata": {
        "description": "Name of the existing storage"
      }
    },
    "mailAddress": {
      "type": "string",
      "metadata": {
        "description": "Email address for ACME account."
      }
    },
    "acmeEndpoint": {
      "type": "string",
      "allowedValues": [
        "https://acme-v02.api.letsencrypt.org/",
        "https://api.buypass.com/acme/"
      ],
      "defaultValue": "https://acme-v02.api.letsencrypt.org/",
      "metadata": {
        "description": "Certification authority ACME Endpoint."
      }
    },
    "keyVaultBaseUrl": {
      "type": "string",
      "metadata": {
        "description": "Enter the base URL of an existing Key Vault. (ex. https://example.vault.azure.net)"
      }
    }
  },
  "variables": {
    "functionAppName": "[parameters('appName')]",
    "appServicePlanName": "[parameters('appPlanName')]",
    "appInsightsName": "[parameters('appInsightsName')]",
    "storageAccountName": "[parameters('storageName')]",
    "storageAccountId": "[resourceId('Microsoft.Storage/storageAccounts', variables('storageAccountName'))]",
    "mailAddress": "[parameters('mailAddress')]",
    "acmeEndpoint": "[parameters('acmeEndpoint')]",
    "vaultBaseUrl": "[parameters('keyVaultBaseUrl')]",
    "appInsightsEndpoints": {
      "AzureCloud": "applicationinsights.azure.com",
      "AzureChinaCloud": "applicationinsights.azure.cn",
      "AzureUSGovernment": "applicationinsights.us"
    }
  },
  "resources": [
    {
      "type": "Microsoft.Insights/components",
      "name": "[variables('appInsightsName')]",
      "apiVersion": "2015-05-01",
      "location": "[resourceGroup().location]",
      "tags": {
        "[concat('hidden-link:', resourceGroup().id, '/providers/Microsoft.Web/sites/', variables('functionAppName'))]": "Resource"
      },
      "properties": {
        "Application_Type": "web",
        "applicationId": "[variables('appInsightsName')]"
      }
    },
    {
      "type": "Microsoft.Web/sites",
      "name": "[variables('functionAppName')]",
      "apiVersion": "2020-06-01",
      "location": "[resourceGroup().location]",
      "kind": "functionapp",
      "identity": {
        "type": "SystemAssigned"
      },
      "dependsOn": [
        "[resourceId('Microsoft.Insights/components', variables('appInsightsName'))]"
      ],
      "properties": {
        "serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('appServicePlanName'))]",
        "siteConfig": {
          "appSettings": [
            {
              "name": "APPLICATIONINSIGHTS_CONNECTION_STRING",
              "value": "[concat('InstrumentationKey=', reference(resourceId('Microsoft.Insights/components', variables('appInsightsName')), '2015-05-01').InstrumentationKey, ';EndpointSuffix=', variables('appInsightsEndpoints')[environment().name])]"
            },
            {
              "name": "AzureWebJobsStorage",
              "value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('storageAccountName'), ';AccountKey=', listKeys(variables('storageAccountId'), '2018-11-01').keys[0].value, ';EndpointSuffix=', environment().suffixes.storage)]"
            },
            {
              "name": "WEBSITE_CONTENTAZUREFILECONNECTIONSTRING",
              "value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('storageAccountName'), ';AccountKey=', listKeys(variables('storageAccountId'), '2018-11-01').keys[0].value, ';EndpointSuffix=', environment().suffixes.storage)]"
            },
            {
              "name": "WEBSITE_CONTENTSHARE",
              "value": "[toLower(variables('functionAppName'))]"
            },
            {
              "name": "WEBSITE_RUN_FROM_PACKAGE",
              "value": "https://shibayan.blob.core.windows.net/azure-keyvault-letsencrypt/v3/latest.zip"
            },
            {
              "name": "FUNCTIONS_EXTENSION_VERSION",
              "value": "~3"
            },
            {
              "name": "FUNCTIONS_WORKER_RUNTIME",
              "value": "dotnet"
            },
            {
              "name": "Acmebot:Contacts",
              "value": "[variables('mailAddress')]"
            },
            {
              "name": "Acmebot:Endpoint",
              "value": "[variables('acmeEndpoint')]"
            },
            {
              "name": "Acmebot:VaultBaseUrl",
              "value": "[variables('vaultBaseUrl')]"
            },
            {
              "name": "Acmebot:Environment",
              "value": "[environment().name]"
            }
          ],
          "clientAffinityEnabled": false
        },
        "ftpsState": "Disabled",
        "httpsOnly": true
      },
      "resources": [
        {
          "apiVersion": "2020-06-01",
          "name": "metadata",
          "type": "config",
          "dependsOn": [
            "[resourceId('Microsoft.Web/sites', variables('functionAppName'))]"
          ],
          "properties": {
            "synctriggersstatus": "[listsyncfunctiontriggerstatus(resourceId('Microsoft.Web/sites', variables('functionAppName')), '2020-06-01').status]"
          }
        }
      ]
    }
  ],
  "outputs": {
    "functionAppName": {
      "type": "string",
      "value": "[variables('functionAppName')]"
    },
    "identity": {
      "type": "object",
      "value": "[reference(resourceId('Microsoft.Web/sites', variables('functionAppName')), '2020-06-01', 'Full').identity]"
    }
  }
}