bag

Docker in 600 lines of bash using proot. Fully compatible with termux, runs on android up to version 10 with no problems.

This is a stateless script, it creates no files or anything to keep track of the instances you create. Doesn't run a daemon. It's plain bash, will ls into a directory to see what instances you have. Simple as that.

Supported images

Currently only alpine. Will add arch, fedora, ubuntu, debian and ... later.

Road Map

• Directly pull and run docker images.
• Support chroot.
• Test more on PC / x86.
• Make proot accept custom port mapping.

Prerequisites

• proot
• bash 4.0+
• tar (d'oh! does this even count?)
• grep
• sha256sum (or disable image verification)
• curl

Examples

Example	Command
Run the command whoami in the default container	bag x whoami
Run the command sleep 3 in the default container	bag x sleep 3
Run the command whoami in the container called foo, if the container doesn't exist, create it with default image first	bag r foo whoami
Create an container called foo with image alpine, don't run anything	bag c foo alpine
Create an container called foo with default image (alpine), don't run anything	bag c foo
Remove the container foo	bag rm foo
Remove the default container	bag rmd
Create tar archive from the container foo	bag e foo
Copy a file/dir into the continaer foo	bag cp /etc/host foo:/opt
Copy a file/dir from the continaer foo	bag cp foo:/opt/config.cfg /tmp
Copy a file/dir from the continaer foo to container bar	bag cp foo:/etc bar:/usr/

Implemented commands

(Docker) Command	Args	Alt Form	Info
version		-v	Display version.
help		[-]h[elp]	Display help and usage.
images		i[mages]	List all previously downloaded images.
rmi	rmi		Remove a previously downloaded image.
c	c image	c[reate]	Create an container from the image id .
run	run [cmd]	r[un]	Run a command in a container, can be existing container. If it doesn't exist a new one will be created from default image. If command is not given, it will open a login shell. But if the container has a entry point file and no command is given, the entry point file is ran instead of a login shell.
ps			List all previously created containers.
rm	rm id		Remove the container with the id .
rmd		rm bagdefault	Remove the default container.
cp	cp id:/src /dst	cp src id:/dst	Copy a file from host to an container or from an container to a host or from one container to another container. Recursive by default.
e	e id	e[xport]	Export the container with the id as a tar archive.
x	x cmd	execute-default	execute the command in the default container.

To be implemented commands:

• exec
• import
• kill
• pull
• push
• rename