packer.json

{
    "variables": {
        "client_id": "",
        "client_secret": "",
        "subscription_id": "",
        "tenant_id": "",
        "managed_image_prefix": "",
        "managed_image_resource_group_name": "",
        "build_resource_group_name": "",
        "ssh_username": "packer",
        "ssh_password": "",
        "ApplicationArtifacts": "",
        "WorkingDirectory": ""
    },
    "sensitive-variables": ["client_secret"],
    "builders": [
        {
            "type": "azure-arm",
            "client_id": "{{user `client_id`}}",
            "client_secret": "{{user `client_secret`}}",
            "tenant_id": "{{user `tenant_id`}}",
            "subscription_id": "{{user `subscription_id`}}",
            "build_resource_group_name": "{{user `build_resource_group_name`}}",
            "ssh_username": "{{user `ssh_username`}}",
            "ssh_password": "{{user `ssh_password`}}",
            "ssh_pty": "true",
            "managed_image_name": "{{user `managed_image_prefix`}}-{{timestamp}}",
            "managed_image_resource_group_name": "{{user `managed_image_resource_group_name`}}",
            "os_type": "Linux",
            "image_publisher": "Canonical",
            "image_offer": "UbuntuServer",
            "image_sku": "18.04-LTS",
            "vm_size": "Standard_DS2_v2"
        }
    ],
    "provisioners": [
        {
            "type": "file",
            "source": "{{user `WorkingDirectory`}}/{{user `ApplicationArtifacts`}}",
            "destination": "/tmp"
        },
        {
            "type": "shell",
            "execute_command": "echo '{{user `ssh_pass`}}' | {{ .Vars }} sudo -S -E sh '{{ .Path }}'",
            "script": "{{user `WorkingDirectory`}}/setup.sh"
        },
        {
            "execute_command": "echo '{{user `ssh_pass`}}' | {{ .Vars }} sudo -S -E sh '{{ .Path }}'",
            "inline": [
              "/usr/sbin/waagent -force -deprovision+user && export HISTSIZE=0 && sync"
            ],
            "inline_shebang": "/bin/sh -x",
            "type": "shell",
            "skip_clean": true
         }
    ]
}