Phagrancy implements a self-hosted subset of Vagrant Cloud. It allows you to build images in Packer, publish them and then share the images with your co-workers via Vagrant, all on-premise.
Please see the wiki for documentation.
You can use the docker-compose.yml as an example of how to use phagrancy via docker.
Phagrancy is intended to be used in a trusted network. There are limited authentication options, that control access to the api and the frontend.
The idea is based off of the Vagrancy project, but has been updated for current packer releases.