BuildKit
BuildKit is a next-generation container image builder toolkit for Docker and other container platforms, designed as a backend for the Docker Build engine. It provides enhanced performance, caching, and security features compared to the legacy builder, enabling faster and more efficient container builds. It supports advanced features like parallel build stages, secrets management, and rootless builds.
Developers should use BuildKit when building Docker images to significantly improve build speed through better caching and parallelization, especially in CI/CD pipelines. It's essential for complex multi-stage builds, handling build secrets securely without embedding them in images, and enabling rootless builds for enhanced security in production environments.