https://github.com/cedws/concrete-ubuntu

Small UEFI-bootable Ubuntu image built inside Docker
https://github.com/cedws/concrete-ubuntu

distro ubuntu

Last synced: 2 months ago
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Small UEFI-bootable Ubuntu image built inside Docker

• Host: GitHub
• URL: https://github.com/cedws/concrete-ubuntu
• Owner: cedws
• License: mit
• Created: 2020-09-19T21:33:15.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2023-01-30T20:27:34.000Z (over 2 years ago)
• Last Synced: 2025-07-30T08:08:38.537Z (2 months ago)
• Topics: distro, ubuntu
• Language: Dockerfile
• Homepage:
• Size: 21.5 KB
• Stars: 3
• Watchers: 1
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# concrete-ubuntu

A small UEFI + Secure Bootable Ubuntu image built entirely in Docker. This was mostly an experiment to see if OS images could be built reasonably without heavy and slow solutions like Packer.

Building images inside Docker requires a few tricks detailed in [my blog post](https://cedwards.xyz/building-os-images-in-docker/).

## Features

* Built entirely in Docker

* Small (rootfs squash is just 400MB!)

* UEFI + Secure Boot-able

* Resilient to corruption

* Resettable without reburn

* Fast and simple to build by leveraging Docker's layer cache

This project is not associated with Ubuntu or Canonical. Ubuntu is a registered trademark of Canonical Ltd.