The KIWI boxed plugin provides support for self contained building of images based on fast booting VM images.

Specifically, this plugin adds the `system boxbuild` subcommand to KIWI as an alternative to the `system build` subcommand. This command downloads a prebuilt VM image and runs the given KIWI command line inside the VM. The operating system powering the VM image can be selected using the `--box` argument. The plugin then runs `kiwi system build` inside the VM with all arguments that are passed to the `kiwi system boxbuild` command after the `--` sequence.

Example: kiwi system boxbuild --box ubuntu --

The boxbuild process requires either `qemu-system-x86` or `qemu-system-arm`, depending on which target architecture is being built.