dotcloud/docker

package specialimage

import (
    "github.com/distribution/reference"
    "github.com/opencontainers/image-spec/specs-go"
    ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)

// EmptyIndex creates an image index with no manifests.
// This is equivalent to `tianon/scratch:index`.
func EmptyIndex(dir string) (*ocispec.Index, error) {
    const imageRef = "emptyindex:latest"

    index := ocispec.Index{
        Versioned: specs.Versioned{SchemaVersion: 2},
        MediaType: ocispec.MediaTypeImageIndex,
        Manifests: []ocispec.Descriptor{},
    }

    ref, err := reference.ParseNormalizedNamed(imageRef)
    if err != nil {
        return nil, err
    }
    return multiPlatformImage(dir, ref, index)
}