buildx is a docker CLI plugin implementing extended build features.
buildx is the default builder as of Docker v23.x, and if the plugin is not
present, the CLI will output an error warning that it is using the deprecated
built-in builder instead of the buildx builder.
However, buildx is a separate repository from docker-cli: it is a plugin that
needs to be installed at /usr/lib/docker/cli-plugins on the target.
https://github.com/docker/buildx
Signed-off-by: Christian Stewart <christian@aperture.us>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
