Microbox is an open-source clone of Nanobox, a development and deployment toolset now owned by Digital Ocean. The version being cloned is hosting-provider-agnostic, and builds infrastructure via configuration rather than code. DO is working to adjust it to a DO-only and Dockerfile-driven approach, but many folks wanted to keep access to the existing approach instead, especially those hosting on other providers. So, we've begun the work to satisfy that demand.