export DEBUGINFOD_URLS="http://foo.mynet.local/debuginfo https://debuginfod.elfutils.org/" 
export DEBUGINFOD_IMA_CERT_PATH="/etc/certs"

apt install git wget uuid-runtime libncurses-dev dialog gnupg2 ntp rhash dosfstools btrfs-progs cryptsetup parted

cd /tmp
git clone https://github.com/oddlama/gentoo-install
cd gentoo-install
pkill ntp
./configure
./install

echo "root:1000000:1000000000" | tee -a /etc/subuid /etc/subgid

rc-service incus start
rc-update add incus default

incus launch images:debian/trixie/amd64 trixie-container-o1
incus launch images:debian/trixie/amd64 trixie-container-o2
incus launch images:debian/forky/amd64 forky-container-o1

/etc/portage/package.use/qemu:

app-emulation/qemu spice usbredir virtfs

systemd containers on OpenRC host:

/etc/rc.conf
rc_cgroup_mode="hybrid"

rc_cgroup_controllers="yes"
rc_controller_cgroups="yes"

/etc/init.d/incus
...
install -d /sys/fs/cgroup/systemd --group incus-admin --owner root
mount -t cgroup -o none,name=systemd systemd /sys/fs/cgroup/systemd
...