su -c "mount -t tmpfs -o mode=755 tmpfs /sys/fs/cgroup && mkdir -p /sys/fs/cgroup/devices && mount -t cgroup -o devices cgroup /sys/fs/cgroup/devices && mkdir -p /sys/fs/cgroup/systemd && mount -t cgroup cgroup -o none,name=systemd /sys/fs/cgroup/systemd"

su -c "mount | grep cgroup"

apt update
apt install ca-certificates curl gnupg
install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
chmod a+r /etc/apt/keyrings/docker.gpg

echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
  tee /etc/apt/sources.list.d/docker.list > /dev/null

apt update
apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

su -c "mount -t tmpfs -o mode=755 tmpfs /sys/fs/cgroup && mkdir -p /sys/fs/cgroup/devices && mount -t cgroup -o devices cgroup /sys/fs/cgroup/devices && mkdir -p /sys/fs/cgroup/systemd && mount -t cgroup cgroup -o none,name=systemd /sys/fs/cgroup/systemd"

DOCKER_RAMDISK=true dockerd --iptables=false

docker run --rm hello-world

echo 'DOCKER_OPTS="--iptables=false"' >> /etc/default/docker
echo 'export DOCKER_RAMDISK=true' >> /etc/default/docker

apt update
apt install lxc wget

echo "lxc.init.cmd = /sbin/init systemd.unified_cgroup_hierarchy" >> /usr/share/lxc/config/common.conf
echo "lxc.net.0.type = none" > /etc/lxc/default.conf

su -c "mount -t tmpfs -o mode=755 tmpfs /sys/fs/cgroup && mkdir -p /sys/fs/cgroup/devices && mount -t cgroup -o devices cgroup /sys/fs/cgroup/devices && mkdir -p /sys/fs/cgroup/systemd && mount -t cgroup cgroup -o none,name=systemd /sys/fs/cgroup/systemd"

lxc-create -t download -n 容器名 -- --server mirrors.tuna.tsinghua.edu.cn/lxc-images

chroot /var/lib/lxc/容器名/rootfs /bin/passwd

lxc-start -n 容器名

lxc-console -n 容器名

echo 'nameserver 223.5.5.5' > /etc/resolv.conf

sed -i 's|http://ports.ubuntu.com/ubuntu-ports|https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports|g' /etc/apt/sources.list

passwd