Example containers that derive from (Fedora) CoreOS

https://fedoraproject.org/wiki/Changes/OstreeNativeContainer and https://github.com/coreos/enhancements/blob/main/os/coreos-layering.md

are aiming to make it native to Fedora (and derivatives) to take a container build, but boot it and upgrade from it.

This repository contains example containers to demonstrate functionality.

Examples

• ansible-firewalld: Demos using Ansible to configure firewalld
• butane: Demos using https://github.com/coreos/butane
• rsyslog: Install and configure rsyslog to forward to a remote host
• wifi: Install support for wireless networks along with pre-baked configuration to join a network
• selinux: Demos changing a SELinux boolean
• inject-go-binary: Demos adding building and injecting a Go binary + systemd unit
• tailscale: Demos https://tailscale.com/download/linux/fedora
• replace-systemd: Replacing a base package, in this case systemd

Running an example

• Build an image using an example from this repo and push it to an image registry:

  set IMAGE (podman build $EXAMPLE -q)
  podman push $IMAGE quay.io/$USER/$EXAMPLE
  

• Setup a system that has rpm-ostree installed. One possibility is using virt-install.

• Rebase the system with rpm-ostree to the image