BuildKit

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. BuildKit is a new project under the Moby umbrella for building and packaging software using containers. It’s a new codebase meant to replace the internals of the current build features in the Moby Engine. BuildKit emerged from the discussions about improving the build features in Moby Engine. We received a lot of positive feedback for the multi-stage build feature introduced in April and had proposals and user requests for many similar additions. But before that, we needed to make sure that we have capabilities to continue adding such features in the future and a solid foundation to extend on. Quite soon it was clear that we would need to redefine most of the fundamentals about how we even define a build operation and needed a clean break from the current codebase. A proposal was written, and development started in the open under the new repository.