Buildx is a Docker CLI plugin for extended build capabilities with BuildKit.
Buildx solves the limitations of the standard docker build command by exposing the full power of BuildKit, a modern container image builder. It maintains a familiar interface matching docker build while adding support for advanced features like multi-platform image builds, multiple builder instances, and in-container drivers that work with both Docker and Kubernetes. The tool bridges the gap between simple local builds and complex build scenarios without requiring users to learn an entirely new workflow.
Buildx suits teams building multi-platform container images or those needing more control over the build process than standard docker build provides. It works well for projects requiring cross-platform support, complex build orchestration, or integration with Kubernetes environments. The tool is included by default in Docker Desktop for Windows and macOS, and available as a plugin package for Linux distributions, making adoption straightforward for most Docker users. For those preferring high-level build definitions, Buildx includes Bake, which enables declarative build configuration.
The project maintains active development with regular updates addressing both new features and compatibility with evolving BuildKit versions. The maintainers emphasize production readiness through official distribution channels, recommending against manual binary installation for production use and instead directing users to Docker Desktop or official package repositories where automatic security updates are available. Documentation is comprehensive, covering installation across multiple platforms and providing clear guidance on builder instance management and multi-platform build workflows.
