Fedora IoT Bootc Image Example with Quay

FROM quay.io/fedora-testing/fedora-bootc:rawhide-standard as builder
RUN /usr/libexec/bootc-base-imagectl build-rootfs --manifest=fedora-iot /target-rootfs

FROM scratch
COPY --from=builder /target-rootfs/ /
LABEL containers.bootc 1
ENV container=oci
STOPSIGNAL SIGRTMIN+3
CMD ["/sbin/init"]

podman build --cap-add=all --security-opt=label=type:container_runtime_t \
--device /dev/fuse -t localhost/fedora-iot -f Containerfile.custom .

podman tag localhost/fedora-iot:latest quay.io/[quay repository name]:fedora-iot

Push your new Fedora IoT bootc image to Quay.io using the following command. Note that you may need to log in again:

NOTE: The next step uses `podman-bootc`. If you need to install `podman-bootc`, please follow the instructions in the https://github.com/containers/podman-bootc[podman-bootc repository]

Now, boot your Fedora IoT bootc image. Open a new terminal window and run:

`podman-bootc` will pull your image and boot it inside a VM in the terminal window, allowing you to test everything Fedora IoT bootc images have to offer.

== Pushing an Update to your Fedora IoT bootc system

After completing the tutorial above, you now have a functional Fedora IoT bootc system! But what if you need to make a change? Updating a bootc system is remarkably simple -- just follow the steps below.

NOTE: This tutorial assumes you have just completed the above tutorial, and have access to a booted Fedora IoT bootc system.

First, navigate to your cloned Fedora Bootc Base Images repository and create a containerfile named `Containerfile.fix` with your desired changes.

Next, rebuild your `localhost/fedora-iot` image using the new containerfile:

Tag your updated Fedora IoT bootc image:

Before pushing to Quay.io, you may need to log in:

Push your updated Fedora IoT bootc image to Quay.io, using the command below:

After successfully pushing, switch back to your virtual machine running your Fedora IoT bootc image. Download and queue the updated image for your next reboot:

Run the following command to see your updated image staged for the next reboot:

Reboot your Fedora IoT bootc system and use your new updated image:

After rebooting, you may need to ssh back into your Fedora IoT bootc system. To do so, first list all podman-bootc VMs:

Then find the ID of your desired machine and run the following:

After reconnecting, run check the status again:

Your updated image should now show up as `Booted`, and the previous image as `Rollback`. You have successfully updated your Fedora IoT bootc system!