Using buildah

Buildah is a tool that facilitates building OCI container images. You can build images from scratch, from a container pulled from a registry, or using a Dockerfile.

To use buildah in the Fedora IoT you will need to install the layered packages:

More commonly buildah is used in a developer environment and the resulting containers are then uploaded to a registry for use on any device.

The commands for building a container from a base image are similar to the lines in a Dockerfile. The first step is to pull the base images and create the working container:

Add packages to the working container:

Copy local files into the working container:

Define the container entrypoint to start the application:

Once configured, save the image:

You can list the local images:

The buildah images are the same as the podman images. You can run now the container locally with podman:

To make the image available on other devices, push the image to a registry. The default image has a tag of 'latest'. Use buildah tag to add additional tags to the image before pushing to a repository.

To push the image to a local Docker registry:

To push to a remote registry provide the correct URL and any required credentials:

Skopeo can be used to inspect the results:

Test the portability of the container with docker pull or podman pull or buildah from commands.

Learn more about using buildah from: