Bake is a feature of Docker Buildx that lets you define your build configuration using a declarative file, as opposed to specifying a complex CLI expression. It also lets you run multiple builds concurrently with a single invocation.
A Bake file can be written in HCL, JSON, or YAML formats, where the YAML format is an extension of a Docker Compose file. Here's an example Bake file in HCL format:
The group block defines a group of targets that can be built concurrently.
Each target block defines a build target with its own configuration, such as
the build context, Dockerfile, and tags.
To invoke a build using the above Bake file, you can run:
This executes the default group, which builds the frontend and backend
targets concurrently.
Get started
To learn how to get started with Bake, head over to the Bake introduction.
