I would like to setup (1) VBoxTool to automatically start a VirtualBox virtual machine upon boot, and (2) early-ssh to start dropbear in initramfs so that I can SSH into the machine to decrypt my LUKS/crypt-setup protected system partition so that SliTaz can be booted from it.

All of the above require some modification of initamfs, and what's run at boot time. How do I do that for SliTaz? Thanks.