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add top-level "docker bake" command as alias for "docker buildx bake"

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The [`docker buildx bake`][1] command has reached GA; this patch adds
a top-level `docker bake` command as alias for `docker buildx bake` to
improve discoverability and make it more convenient to use.

With this patch:

    docker --help

    Usage:  docker [OPTIONS] COMMAND

    A self-sufficient runtime for containers

    Common Commands:
      run         Create and run a new container from an image
      exec        Execute a command in a running container
      ps          List containers
      build       Build an image from a Dockerfile
      bake        Build from a file
      pull        Download an image from a registry
      push        Upload an image to a registry
      images      List images
    ...

The command is hidden if buildx is not installed;

    docker --help
    Usage:  docker [OPTIONS] COMMAND

    A self-sufficient runtime for containers

    Common Commands:
      run         Create and run a new container from an image
      exec        Execute a command in a running container
      ps          List containers
      build       Build an image from a Dockerfile
      pull        Download an image from a registry
      push        Upload an image to a registry
      images      List images
    ...

We can do some tweaking after this; currently it show an error
in situations where buildx is missing. We don't account for
"DOCKER_BUILDKIT=0", because this is a new feature that requires
buildx, and cannot be "disabled";

buildx missing;

    docker bake
    ERROR: bake requires the buildx component but it is missing or broken.
           Install the buildx component to use bake:
           https://docs.docker.com/go/buildx/

BuildKit disabled:

    DOCKER_BUILDKIT=0 docker bake
    ERROR: bake requires the buildx component but it is missing or broken.
           Install the buildx component to use bake:
           https://docs.docker.com/go/buildx/

[1]: https://www.docker.com/blog/ga-launch-docker-bake/

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
2025-03-21 13:25:59 +01:00
parent e937b52210
commit adb0abaec5
6 changed files with 56 additions and 0 deletions
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6
cmd/docker/docker.go
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@ -247,6 +247,12 @@ func setHelpFunc(dockerCli command.Cli, cmd *cobra.Command) {
}
}
// FIXME(thaJeztah): need a better way for this; hiding the command here, so that it's present" by default for generating docs etc.
if c, _, err := ccmd.Find([]string{"buildx"}); c == nil || err != nil {
if b, _, _ := ccmd.Find([]string{"bake"}); b != nil {
b.Hidden = true
}
}
if err := isSupported(ccmd, dockerCli); err != nil {
ccmd.Println(err)
return