Add file with the machines name like so: /etc/systemd/nspawn/<name>.nspawn

[Files]
Bind=/home

[Exec]
ResolvConf=copy-host
#PrivateUsers=false

#Needed when a .nspawn file is used (since bullseye https://github.com/systemd/systemd/issues/12313)
Capability=CAP_NET_ADMIN

debootstrap --include=systemd,dbus,systemd-container bookworm /var/lib/machines/container_name

Then either use

systemd-nspawn -D /var/lib/machines/container_name

or

machinectl start container_name
machinectl shell container_name

If started using machinectl, then enable and start systemd-networkd in the container to get the networking up and running.

systemctl --now enable systemd-networkd

Example for bookworm, also add contrib etc. if you need them.

deb http://security.debian.org/ bookworm-security main