13.3. Building an image and pulling the container into the image

Procedure

1. Create a blueprint to build a qcow2 image. The blueprint must contain the [[containers]] customization.

   name = "image"
   description = "A qcow2 image with a container"
   version = "0.0.1"
   distro = "rhel-10"
   [[packages]]
   name = "podman"
   version = "*"
   [[containers]]
   source = "registry.access.redhat.com/ubi10:8080/image/container/container-image@sha256:manifest-ID-from-Repository-tag: tag-version"
   name =  "source"
   tls-verify = true

2. Build the container image:

   # image-builder build qcow2 --blueprint <blueprint>

   注意

   Building the image takes time because it checks the container on quay.io registry.

   You can use the qcow2 image you created and downloaded to create a VM.

Verification

1. Locate the resulting qcow2 image.
2. Start the qcow2 image in a VM. See Creating a virtual machine from a KVM guest image.
3. The qemu wizard opens. Log in to the qcow2 image by entering the username and password. These can be the username and password you set up in the .qcow2 blueprint in the customizations.user section, or created at boot time with cloud-init.

4. Run the container image and open a shell prompt inside the container:

   # podman run -it registry.access.redhat.com/ubi10:8080/<organization>/<repository>/bin/bash/

   registry.access.redhat.com is the target registry, <organization> is the organization, and repository is the location to push the container when it finishes building.

5. Check that the packages you added to the blueprint are available:

   # type -a nginx

   The output shows you the nginx package path.