Chapter 4. Using the command-line assistant component functions in Image Mode for RHEL

Procedure

1. Create a Containerfile:

   $ cat Containerfile
   FROM registry.redhat.io/rhel10/rhel-bootc:latest
   RUN <<EORUN
   set -euxo pipefail
   dnf install -y command-line-assistant
   dnf clean all
   rm -rf /var/cache/dnf/
   bootc container lint
   EORUN

2. Build the <image> image by using Containerfile in the current directory:

   $ podman build -t quay.io/<namespace>/<image>:<tag> .

3. Build a disk image from the container image. The following example creates a QCOW2 image:

   $ sudo podman run \
       --rm \
       -it \
       --privileged \
       --pull=newer \
       --security-opt label=type:unconfined_t \
       -v ./config.toml:/config.toml:ro \
       -v ./output:/output \
       -v /var/lib/containers/storage:/var/lib/containers/storage \
       registry.redhat.io/rhel10/bootc-image-builder:latest \
       --type qcow2 \
       --config /config.toml \
       quay.io/<namespace>/<image>:<tag>

   • <namespace>: your container registry namespace.
   • <image>: your image name.
   • <tag>: your image tag, for example, latest.
4. Boot a machine with the QCOW2 disk image. For instructions, see Deploying a container image by using KVM with a QCOW2 disk image.