description BuildKit Overview
BuildKit is a toolkit that optimizes Docker builds by leveraging parallel execution, caching, and utilizing containerized builders for improved efficiency and resource utilization.
help BuildKit FAQ
Is BuildKit the default builder for Docker?
Yes, BuildKit became the default builder for Docker Engine starting with the 23.0 release in early 2023. Previously, users had to manually enable it via an environment variable or flag to take advantage of its optimizations.
What are the main benefits of using BuildKit over the legacy Docker builder?
BuildKit dramatically improves build speeds by executing independent build stages in parallel. It also provides better cache management, allowing users to mount external caches, and supports advanced features like multi-platform builds (e.g., building for ARM on an x86 machine).
What language do you use to write a BuildKit file?
While it can parse standard Dockerfiles, BuildKit supports an experimental frontend called `dockerfile:1.4` that unlocks new syntaxes. Developers can also use custom frontends like Earthly or Buildpacks to script builds in other domain-specific languages.
Who maintains the BuildKit project?
BuildKit is an open-source project maintained by the team at Docker and the broader Moby Project community. It is written in the Go programming language and is hosted on GitHub.
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