# login
root

# set keymap
setup-keymap

# create ext4 partition
fdisk /dev/sda (create a partition)
apk add e2fsprogs
mkfs.ext4 /dev/sda1

# install vz
apk add vzctl

# mount ext4 partition
mv /vz /vz2
mount /dev/sda1 /vz (or mount -t ext4 /dev/sda1 /vz)
mv /vz2/* /vz/

# networking (or container will not start because /etc/resolv.conf is missing)
setup-interfaces
service networking start

# start vz service
service vz start

# create a container
vzctl create 101 --ostemplate centos-7-x86_64 --name centos7 --hostname centos7.localdomain (--layout simfs)

# ploop support
apk add ploop

# get alpine repositories
setup-apkrepos

// vzctl set {ctid} --ipadd {n.n.n.n} --save
// vzctl set {ctid} --nameserver {n.n.n.n} --save