VirtualBox

The VirtualBox provider can bootstrap to both .vdi and .vmdk images (raw images are also supported but do not run in VirtualBox). It’s advisable to always use vmdk images for interoperability (e.g. OVF files should support vdi files, but since they have no identifier URL not even VirtualBox itself can import them). VirtualBox Guest Additions can be installed automatically if the ISO is provided in the manifest.