docker tag equivalent in Dagger | Dagger | Page 1

Hello Dagger community,

I'm struggling to find an equivalent to docker tag <image name:version> <image> with a Dagger Container. My intent is to use Container.AsTarball() and load it into the Dagger K3S module's local images, i.e. ctr -n k8s.io images import <tarball>.

This works, but it's REF is its sha256 digest. I want to set the image tag:version, similar to what the Dagger Container.Publish() does, except I dont want to push it to a registry yet.

Labels aren't working either, in my current implementation:

func (m *Kube) BuildTarball(ctx context.Context, project string, title string, version string) *dagger.File {
    return dag.Container(dagger.ContainerOpts{Platform: "linux/amd64"}).
        WithMountedDirectory("/app", m.Source).
        WithWorkdir(fmt.Sprintf("/app/%s", project)).
        Directory(fmt.Sprintf("/app/%s", project)).
        DockerBuild(dagger.DirectoryDockerBuildOpts{
            Platform:   "linux/amd64",
            Dockerfile: "Dockerfile",
        }).
        WithLabel("org.opencontainers.image.title", title).
        WithLabel("org.opencontainers.image.version", version).
        //Publish(ctx, fmt.Sprintf("%s:%s", title, version)).
        AsTarball()
}

Any advice would be appreciated.
Thank you in advance.

The Load Image function:

func (m *Kube) ImportImage(ctx context.Context, path string, project string, title string, version string) (string, error) {
    return m.Container.
        WithMountedCache("/run/k3s/containerd", m.SocketCache).
        WithFile(fmt.Sprintf("/tmp/%s", path), m.BuildTarball(ctx, project, title, version), dagger.ContainerWithFileOpts{Permissions: 1001}).
        WithExec([]string{"sh", "-c", fmt.Sprintf("ctr -n=k8s.io images import --base-name %s:%s /tmp/%s", title, version, path)}, dagger.ContainerWithExecOpts{
            UseEntrypoint:            true,
            InsecureRootCapabilities: true,
        }).
        Stdout(ctx)
}

#docker tag equivalent in Dagger