Quickstart:

Get ruri：

ruri provides binary for arm64, armv7, armhf, riscv64, i386, loong64, s390x, ppc64le and x86_64 platform，You can use the following command to download ruri as ./ruri:

wget -q -O - https://getruri.crack.moe | bash -s -- -s

Get a rootfs：

Use rurima（Recommend）：

Get alpine edge image:

wget -q -O - https://getrurima.crack.moe | bash -s -- -s
sudo ./rurima lxc pull -o alpine -v edge -s ./test 

BTW, rurima have a built-in ruri, so you can also use rurima r instead ruri.

Use rootfstool（Discarded）：

Get alpine edge image:

git clone https://github.com/Moe-hacker/rootfstool
./rootfstool/rootfstool download -d alpine -v edge
mkdir test
sudo tar -xvf rootfs.tar.xz -C test
rm rootfs.tar.xz

Set up dns：

sudo rm test/etc/resolv.conf
echo nameserver 1.1.1.1|sudo tee test/etc/resolv.conf

Run container：

sudo ./ruri ./test

That's all.