# Packer ## About [Packer](https://www.packer.io/) is a command-line tool to create virtual machines based on a source configuration file. ## Requirements To use packer you need to download and install it (compare [Install Packer](https://www.packer.io/docs/installation.html)). ## Usage A simple build of the vagrant box can be done by: ``` packer build riot.json ``` This command must be executed in the packer directory [RIOT/dist/tools/packer](https://github.com/RIOT-OS/RIOT/tree/master/dist/tools/packer). Note that the build process might take several minutes.