Initial commit
Init Gentoo template
Gentoo: prepare disks
Gentoo: ensure guest has datetime with UTC timezone
Gentoo: stage3
Gentoo: init portage
Gentoo: init local portage
Gentoo: setup make.conf
Gentoo: prepare chroot
Gentoo: select profile
Gentoo: set timezone
Gentoo: select locale
Gentoo: make kernel

Minimal kernel config includes:
- prefer openrc
- base ipv4/ipv6 support, no sit
- nftables, no iptables
- network drivers: e1000
- disk drivers: ata_piix, pata_acpi, sata_ahci
- ext2/4,xfs
Gentoo: fstab
Gentoo: configure network

Disable predictable network interface names feature.
Gentoo: set root password
Gentoo: configure hwclock
Gentoo: setup bootloader (grub2)
Gentoo: install additional packages

Packages list is defined in files/portage/world file.
Their USE-flags, keywords etc. should be defined in files/portage.* files.
All of them will be installed on the world upgrade.
Gentoo: configure base services