Build your own Ubuntu Live Image with Docker

This is a example dockerfile that contains a multi-stage Buildkit build for a Ubuntu flavored image, supporting both arm64 and amd64 architectures.

The stages are:

• init-rootfs-cacher: prepares the inital rootfs using debootstrap
• init-rootfs: debootstrapped rootfs
• lite-image: image that contains most packages, but no desktop environment
• live-image: complete image with desktop environment, kernel, and installer
• squashfs-builder: converts the live-image rootfs to a squashfs image
• iso-builder: builds the live ISO image
• iso-archive: dummy docker stage that just copies the iso to the result folder

Building

To build the image, run the following command:

bash build.sh

Credits

Useful resources for this project:

• Live Custom Ubuntu: https://github.com/mvallim/live-custom-ubuntu-from-scratch
• T2 Ubuntu Linux: https://github.com/t2linux/T2-Ubuntu
• Archboot: https://github.com/tpowa/Archboot