provide cli to bundle our init into a root drive for firecracker

[Joe-Degs]

description

the original idea is we provide a simple way to bundle the root drive containing the init for starting the microvms with a simple command like spitfire mkroot --init --size 5G --name init.drive.

the init and its config can be found here

[Joe-Degs]

initial iteration adds the --init option to the spitfire mkroot command for building the init root drive.

so running sudo spitfire mkroot --init --size 100M --fs ext2 --name tmpinit using go tooling should install the binary from the repo github.com/thi-startup/init with the default config run.json and bundle it into a loop device that when mounted should have the following tree.

joe@spectre:~/dev/thi-startup/spitfire$ mkdir tmp && sudo mount tmpinit tmp
joe@spectre:~/dev/thi-startup/spitfire$ sudo tree tmp
tmp
├── init
├── lost+found
└── thi
    └── run.json

2 directories, 2 files