The micro container shell script
Simply download muc.sh and set it executable as shown:
chmod +x muc.sh
Muc should require no external dependencies other than the GNU Utils and a POSIX compliant shell.
Once downloaded muc will function as a standard shell script, if you wish to install to the system, simply copy muc.sh to /usr/local/bin
You can also use muc without installing, by running curl https://raw.githubusercontent.com/Bravotic/muc/master/muc.sh | sh -s .... Simply replace ./muc.sh or muc.sh with curl https://raw.githubusercontent.com/Bravotic/muc/master/muc.sh | sh -s in the rest of this file. However this is extremely insecure and should not be used unless necessary.
To install containers from a URL, simply type ./muc.sh grab [url of container]. This will download and prompt the installation of the specified container.
To install containers from a file, simply type ./muc.sh install [path to container.tgz]
To run a container, simply type ./muc.sh run [container name]. Alternatively if you wish to run as a daemon, type ./muc.sh rund [name]. Warning, running as a deamon will make it very hard to kill the running container.
A muc container is simply a root fs with a special file detailing how the container should be run. To create a very simple container download the Alpine Linux minirootfs from this link: http://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86_64/alpine-minirootfs-3.12.1-x86_64.tar.gz
A .mucfile is a file that details how the container will run, it will be found in the root of the container (/.mucfile). The contents of a mucfile can be seen below.
Name: Hello World
Command: /bin/ash
Where "Name" is the name of the container and "Command" is the command that will be run within the container.
Once you create a container with a .mucfile, you can run muc.sh test to run through and verify that the container and .mucfile are setup properly.
To package up a container, simply run
tar cvzf ../container.tar.gz .