Docker BuildKit

Getting started

BuildKit is enabled by default for all users on Docker Desktop. If you have installed Docker Desktop, you don't have to manually enable BuildKit. if you are running Docker on Linux, you can enable BuildKit either by using an environment variable or by making BuildKit the default setting.

To see the BuildKit environment variable when running the docker build command, run:

$ DOCKER_BUILDKIT=1 docker build .    

Note

Buildx always enables BuildKit.

To enable docker BuildKit by default, set daemon configuration in /etc/docker/daemon.json feature to true and restart the daemon. If the daemon.json file doesn't exist, create new file called daemon.json and then add the following to the file.

{
    "features" : {
        "buildkit" : true
    }
}

And restart the Docker daemon.

Warning

BuildKit only supports building Linux containers. Windows support is tracked in moby/buildkit#616

for more details : https://docs.docker.com/build/buildkit/