VM-sshPublicKey.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "outputs": {
    "identity": {
      "type": "object",
      "value": "[reference(resourceId('Microsoft.Compute/virtualMachines', parameters('vmName')), '2017-12-01', 'Full').identity]"
    }
  },
  "parameters": {
    "adminPassword": {
      "type": "securestring"
    },
    "adminSSHPublicKey": {
      "type": "securestring"
    },
    "adminUserName": {
      "type": "string"
    },
    "networkInterfaceId": {
      "type": "string"
    },
    "storageAccountType": {
      "type": "string"
    },
    "ubuntuSku": {
      "type": "string"
    },
    "vmLocation": {
      "type": "string"
    },
    "vmName": {
      "type": "string"
    },
    "vmSize": {
      "type": "string"
    }
  },
  "resources": [
    {
      "apiVersion": "2017-03-30",
      "dependsOn": [],
      "location": "[parameters('vmLocation')]",
      "identity": {        
        "Type": "SystemAssigned"        
      },
      "name": "[parameters('vmName')]",
      "properties": {
        "hardwareProfile": {
          "vmSize": "[parameters('vmSize')]"
        },
        "networkProfile": {
          "networkInterfaces": [
            {
              "id": "[parameters('networkInterfaceId')]"
            }
          ]
        },
        "osProfile": {
          "adminUsername": "[parameters('adminUserName')]",
          "computerName": "[parameters('vmName')]",
          "linuxConfiguration": {
            "disablePasswordAuthentication": true,
            "ssh": {
              "publicKeys": [
                {
                  "keyData": "[parameters('adminSSHPublicKey')]",
                  "path": "[concat('/home/',parameters('adminUsername'),'/.ssh/authorized_keys')]"
                }
              ]
            }
          }
        },
        "storageProfile": {
          "imageReference": {
            "offer": "UbuntuServer",
            "publisher": "Canonical",
            "sku": "[parameters('ubuntuSku')]",
            "version": "latest"
          },
          "osDisk": {
            "caching": "ReadWrite",
            "createOption": "FromImage",
            "name": "[concat(parameters('vmName'), '-disk0')]",
            "managedDisk":{
              "storageAccountType": "[parameters('storageAccountType')]"
            }
          }
        }
      },
      "resources": [],
      "tags": {
        "displayName": "[parameters('vmName')]"
      },
      "type": "Microsoft.Compute/virtualMachines"
    }
  ],
  "variables": {}
}