Function buildImageConfig

pkg/cmd/image/import.go:243–276

(diffID digest.Digest, options types.ImageImportOptions)

}

func buildImageConfig(diffID digest.Digest, options types.ImageImportOptions) ([]byte, digest.Digest, error) {
	ociplat := platforms.DefaultSpec()
	if options.Platform != "" {
		if p, err := platforms.Parse(options.Platform); err == nil {
			ociplat = p
		}
	}

	created := time.Now().UTC()
	imgConfig := ocispec.Image{
		Platform: ocispec.Platform{
			Architecture: ociplat.Architecture,
			OS:           ociplat.OS,
			OSVersion:    ociplat.OSVersion,
			Variant:      ociplat.Variant,
		},
		Created: &created,
		Config:  ocispec.ImageConfig{},
		RootFS: ocispec.RootFS{
			Type:    "layers",
			DiffIDs: []digest.Digest{diffID},
		},
		History: []ocispec.History{{
			Created: &created,
			Comment: options.Message,
		}},
	}

	configJSON, err := json.Marshal(imgConfig)
	if err != nil {
		return nil, "", err
	}
	return configJSON, digest.FromBytes(configJSON), nil
}

func readLayerContent(ctx context.Context, cs content.Store, layerDigest digest.Digest, size int64) ([]byte, error) {
	ra, err := cs.ReaderAt(ctx, ocispec.Descriptor{Digest: layerDigest, Size: size})