"Atlas is a "free" service but to use/run an alternative "Atlas" would mean reverse engineering it (if there is a spec detailing the endpoints, calls, payloads

"Atlas is a "free" service but to use/run an alternative "Atlas" would mean reverse engineering it (if there is a spec detailing the endpoints, calls, payloads expected/accepted I'd love to hear about it!)." No official spec to my knowledge, but there are a couple of attempts at this https://github.com/hollodotme/Helpers/blob/master/Tutorials/vagrant/self-hosted-vagrant-boxes-with-versioning.md https://github.com/hollodotme/Helpers/blob/master/Tutorials/... https://www.nopsec.com/news-and-resources/blog/2015/3/27/private-vagrant-box-hosting-easy-versioning/ https://www.nopsec.com/news-and-resources/blog/2015/3/27/pri... "Debian's Apt/Dpkg can work from a purely offline mirror on the local disk if you want" Okay, but Vagrant caches boxes on the local disk too.... if one runs "box update --box --provider" in a scheduled job.