🐧 Ubuntu on TunaOS

TunaOS provides Ubuntu 26.04 Resolute Raccoon as a bootc OCI image with a live installable ISO. This brings Ubuntu's familiar experience to an immutable, container-native foundation.

Quick Start

# Pull the image
podman pull ghcr.io/tuna-os/ubuntu:26.04

# Switch an existing bootc system
sudo bootc switch ghcr.io/tuna-os/ubuntu:26.04
sudo systemctl reboot

Download ISO

Pre-built ISOs are available at tunaos.org/download.

Features

Familiar Ubuntu experience — same APT, same workflows, same ecosystem
Immutable base — atomic updates and rollbacks via bootc
Live ISO — try before you install
OCI-native — pull and switch like any other bootc image

Comparison with Traditional Ubuntu

Aspect	Traditional Ubuntu	TunaOS Ubuntu
Updates	`apt upgrade`	`bootc upgrade` + reboot
Rollback	Complex (fs snapshots)	`bootc rollback`
Immutability	Partial	Full (/usr is read-only)
Installation	ISO installer	`bootc switch` or ISO
Package mgmt	APT	APT + Homebrew + Flatpak

Usage

Package Management

Ubuntu's APT package manager works as expected:

# Update package lists
sudo apt update

# Install packages
sudo apt install htop neovim

# Snap packages (pre-enabled)
sudo snap install firefox

Homebrew

Homebrew is pre-installed on TunaOS Ubuntu images:

# Install CLI tools
brew install ripgrep fd bat

# Install graphical apps
brew install --cask visual-studio-code

Flatpak

Flatpak is pre-enabled with Flathub:

flatpak install flathub org.mozilla.firefox

Quick Start​

Download ISO​

Features​

Comparison with Traditional Ubuntu​

Usage​

Package Management​

Homebrew​

Flatpak​

See Also​