Wrote an article about deploying #Mastodon using #Nanobox, which is now supported directly in the official repo. It's a full walkthrough of the entire deployment process, including initial deployment, pushing updates, making local changes, and even running database backups. You can read it here:

https://content.nanobox.io/getting-social-with-mastodon-and-nanobox/

Feedback more than welcome!