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package specialimage
import (
"strings"
"github.com/distribution/reference"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
// TextPlain creates an non-container image that only contains a text/plain blob.
func TextPlain(dir string) (*ocispec.Index, error) {
ref, err := reference.ParseNormalizedNamed("tianon/test:text-plain")
if err != nil {
return nil, err
}
emptyJsonDesc, err := writeBlob(dir, "text/plain", strings.NewReader("{}"))
if err != nil {
return nil, err
}
configDesc := emptyJsonDesc
configDesc.MediaType = "application/vnd.oci.empty.v1+json"
desc, err := writeJsonBlob(dir, ocispec.MediaTypeImageManifest, ocispec.Manifest{
Config: configDesc,
Layers: []ocispec.Descriptor{
emptyJsonDesc,
},
})
if err != nil {
return nil, err
}
desc.Annotations = map[string]string{
"io.containerd.image.name": ref.String(),
}
return ociImage(dir, nil, desc)
}
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