Develop.md

Developing guide:

Tools:

ruri:Lightweight, User-friendly Linux-container Implementation
rurima:Run docker & LXC images without docker or LXC program, without kernel features support, even without root privileges!
rootfstool:A tool to get linux container rootfs from Lxc-image mirrors
ruri and rurima are published with the MIT License, and rootfstool is Apache-2.0.
You can use these tools to make your own container manager, it will be very easy.

Why ruri:

ruri is a lightweight and simple container backend.
ruri is easy to use, you just need to unset LD_PRELOAD and run it.
ruri is more secure than chroot/unshare command.
ruri is more powerful than chroot/unshare command.

How to create a container manually:

You should install daijin first.

Or you can just modify the source for your project.

Use rootfs tool to get the rootfs:

rootfstool d -m main -d alpine -v edge

this command will download an alpine edge rootfs.

Unpack the rootfs to ./test

For ruri:

sudo mkdir test
sudo tar -xvf rootfs.tar.xz -C ./test

For proot:

mkdir test
proot --link2symlink -0 tar -xvf rootfs.tar.xz -C ./test

Run the fixup script in container

For ruri:

cp /data/data/com.termux/files/usr/share/daijin/fixup.sh ./test/tmp/
unset LD_PRELOAD
ruri ./test /tmp/fixup.sh

For proot:
You should use the proot_start.sh in src/share
And you should make sure src/share/proc.tar.xz is unpacked to /data/data/com.termux/files/usr/share/daijin/proc/

# proot_start.sh will automatically mount $TMPDIR to /tmp
cp /data/data/com.termux/files/usr/share/daijin/fixup.sh /data/data/com.termux/files/usr/tmp
./proot_start.sh -r ./test /tmp/fixup.sh

Start the container:

For ruri:

unset LD_PRELOAD
ruri ./test

For proot:
You should use the proot_start.sh in src/share.
And you should make sure src/share/proc.tar.xz is unpacked to /data/data/com.termux/files/usr/share/daijin/proc/

./proot_start.sh -r ./test

Very Simple, as you can see.

「Shine as you can be」