vagrant/website/source/docs/docker/boxes.html.md

layout	page_title	sidebar_current	description
docs	Boxes - Docker Provider	providers-docker-boxes	The Docker provider does not require a Vagrant box. The "config.vm.box" setting is completely optional.

Docker Boxes

The Docker provider does not require a Vagrant box. The config.vm.box setting is completely optional.

A box can still be used and specified, however, to provide defaults. Because the Vagrantfile within a box is loaded as part of the configuration loading sequence, it can be used to configure the foundation of a development environment.

In general, however, you will not need a box with the Docker provider.