make docker.buildx : build and push multiarch build.
(it can't be only build)
use buildx with the --cache-from and --cache-to options to cache the layers
(only the last built is cached)
The docker image is `searx/searx <https://hub.docker.com/r/searx/searx>`_ (based on `github.com/searx/searx <https://github.com/searx/searx>`_).
The docker image is `searxng/searxng<https://hub.docker.com/r/searxng/searxng>`_ (based on `github.com/searxng/searxng<https://github.com/searxng/searxng>`_).
Make sure you have `installed Docker <https://docs.docker.com/get-docker/>`_. For instance, you can deploy a local instance: