Earthly docker-build is a new feature in Earthly that simplifies the process of building container images by allowing developers to use traditional Dockerfiles without the need for Earthfiles, leveraging BuildKit's capabilities for parallelism and caching to reduce build times. This feature enables a seamless transition for projects that currently rely on Dockerfiles, offering the flexibility to combine Earthfiles and Dockerfiles in continuous integration (CI) environments. By using Earthly Satellites as a persistent remote BuildKit cache, developers can achieve faster builds without the need for manual cache management. The tool is designed to facilitate incremental migration to Earthly, allowing for a gradual adoption while maintaining existing workflows. Earthly docker-build also supports multiple options for specifying Dockerfile paths, image tags, build targets, platforms, and pushing images to remote registries, providing developers with a familiar and efficient workflow.