Update sandbox.json file to the latest packer version.

[Zeppperoni]

i've taken the time to update the json file to work with the latest packer version. below is the fix. I'll try to spend some time learning github to update the fix...

{ "builders": [ { "boot_command": "", "boot_wait": "6m", "communicator": "winrm", "disk_size": "{{user disk_size}}", "floppy_files": [ "{{user autounattend}}", "./floppy/WindowsPowershell.lnk", "./floppy/PinTo10.exe", "./scripts/fixnetwork.ps1", "./scripts/MakeWindows10GreatAgain.ps1", "./scripts/MakeWindows10GreatAgain.reg", "./scripts/rearm-windows.ps1", "./scripts/disable-screensaver.ps1", "./scripts/disable-winrm.ps1", "./scripts/enable-winrm.ps1", "./scripts/microsoft-updates.bat", "./scripts/win-updates.ps1", "./scripts/oracle-cert.cer" ], "guest_additions_mode": "disable", "guest_os_type": "Windows81_64", "headless": false, "iso_checksum": "{{user iso_checksum_type}}:{{user iso_checksum}}", "iso_url": "{{user iso_url}}", "shutdown_command": "shutdown /s /t 10 /f /d p:4:1 /c "Packer Shutdown"", "type": "virtualbox-iso", "vboxmanage": [ [ "modifyvm", "{{.Name}}", "--memory", "2048" ], [ "modifyvm", "{{.Name}}", "--cpus", "2" ] ], "vm_name": "sandbox", "winrm_password": "vagrant", "winrm_timeout": "4h", "winrm_username": "vagrant" } ], "post-processors": [ { "keep_input_artifact": false, "output": "sandbox_{{.Provider}}.box", "type": "vagrant" } ], "provisioners": [ { "execute_command": "{{ .Vars }} cmd /c "{{ .Path }}"", "remote_path": "/tmp/script.bat", "scripts": [ "./scripts/enable-rdp.bat" ], "type": "windows-shell" }, { "scripts": [ "./scripts/debloat-windows.ps1", "./scripts/rearm-windows.ps1", "./scripts/MakeWindows10GreatAgain.ps1" ], "type": "powershell" }, { "type": "windows-restart" }, { "scripts": [ "./scripts/set-powerplan.ps1", "./scripts/docker/disable-windows-defender.ps1" ], "type": "powershell" }, { "execute_command": "{{ .Vars }} cmd /c "{{ .Path }}"", "remote_path": "/tmp/script.bat", "scripts": [ "./scripts/pin-powershell.bat", "./scripts/compile-dotnet-assemblies.bat", "./scripts/set-winrm-automatic.bat", "./scripts/compact.bat" ], "type": "windows-shell" } ], "variables": { "autounattend": "./answer_files/10/Autounattend.xml", "disk_size": "61440", "iso_checksum": "27e4feb9102f7f2b21ebdb364587902a70842fb550204019d1a14b120918e455", "iso_checksum_type": "sha256", "iso_url": "https://software-download.microsoft.com/download/pr/17134.1.180410-1804.rs4_release_CLIENTENTERPRISEEVAL_OEMRET_x64FRE_en-us.iso" } }