VDI isn't created automatically

[j0110]

The VDI "Install Mojave" isn't created, I have to do it manually and to attach it too.
Windows 10 with WSL

`Downloading BaseSystem.dmg from swcdn.apple.com
--2019-03-09 18:07:35-- http://swcdn.apple.com/content/downloads/34/52/041-38914/dhgsi49xaudtqpbj3zibbmjy3ry9ola2rb/BaseSystem.dmg
Resolving swcdn.apple.com (swcdn.apple.com)... 17.253.109.203, 17.253.109.202
Connecting to swcdn.apple.com (swcdn.apple.com)|17.253.109.203|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 485306481 (463M) [application/octet-stream]
Saving to: 'BaseSystem.dmg'

BaseSystem.dmg 100%[=================================================>] 462.82M 2.86MB/s in 97s

2019-03-09 18:09:12 (4.78 MB/s) - 'BaseSystem.dmg' saved [485306481/485306481]

Downloaded BaseSystem.dmg. Converting to BaseSystem.img

dmg2img v1.6.5 (c) vu1tur (to@vu1tur.eu.org)

BaseSystem.dmg --> BaseSystem.img

decompressing:
opening partition 0 ... 100.00% ok
opening partition 1 ... 100.00% ok
opening partition 2 ... 100.00% ok
opening partition 3 ... 100.00% ok
opening partition 4 ... 100.00% ok
opening partition 5 ... 100.00% ok
opening partition 6 ... 100.00% ok
opening partition 7 ... 100.00% ok

Archive successfully decompressed as BaseSystem.img
Converting from raw image file="BaseSystem.img" to file="BaseSystem.vdi"...
Creating dynamic image with size 2146541568 bytes (2048MB)...
Creating MacOS target system virtual disk image.
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Medium created. UUID: ebe9ac1c-90bf-4e21-a086-dc114e5284ac
Creating MacOS installation media virtual disk image.
Oracle VM VirtualBox Command Line Management Interface Version 6.0.4
(C) 2005-2019 Oracle Corporation
All rights reserved.

Usage:

VBoxManage createmedium [disk|dvd|floppy] --filename
[--size |--sizebyte ]
[--diffparent |
[--format VDI|VMDK|VHD] (default: VDI)
[--variant Standard,Fixed,Split2G,Stream,ESX,
Formatted]

Syntax error: Invalid parameter 'MacOS.vdi'
Oracle VM VirtualBox Command Line Management Interface Version 6.0.4
(C) 2005-2019 Oracle Corporation
All rights reserved.

Usage:

VBoxManage storageattach <uuid|vmname>
--storagectl
[--port ]
[--device ]
[--type dvddrive|hdd|fdd]
[--medium none|emptydrive|additions|
<uuid|filename>|host:|iscsi]
[--mtype normal|writethrough|immutable|shareable|
readonly|multiattach]
[--comment ]
[--setuuid ]
[--setparentuuid ]
[--passthrough on|off]
[--tempeject on|off]
[--nonrotational on|off]
[--discard on|off]
[--hotpluggable on|off]
[--bandwidthgroup ]
[--forceunmount]
[--server |]
[--target ]
[--tport ]
[--lun ]
[--encodedlun ]
[--username ]
[--password ]
[--passwordfile ]
[--initiator ]
[--intnet]

VBoxManage.exe: error: Invalid parameter 'MacOS.vdi'
Starting virtualmachine MacOS. This should take a couple of minutes.
Waiting for VM "MacOS" to power on...
VM "MacOS" has been successfully started.`

[myspaghetti]

Duplicate of #41 .