fix: pass layers

https://pkg.go.dev/oras.land/oras-go/v2#example-package-PushFilesToRemoteRepository

pkg/controller/oras.go

@@ -4,6 +4,7 @@ import (
  "context"
  "fmt"
 
+ v1 "github.com/opencontainers/image-spec/specs-go/v1"
  "oras.land/oras-go/v2"
  "oras.land/oras-go/v2/content/file"
  "oras.land/oras-go/v2/registry/remote"
@@ -45,15 +46,20 @@ func pushFiles(ctx context.Context, repo *remote.Repository, tag string) error {
  defer fs.Close()
  mediaType := "example/file" // "application/vnd.unknown.config.v1+json"
  fileNames := []string{"data.json"}
+ fileDescriptors := make([]v1.Descriptor, 0, len(fileNames))
  for _, name := range fileNames {
- if _, err := fs.Add(ctx, name, mediaType, ""); err != nil {
+ fileDescriptor, err := fs.Add(ctx, name, mediaType, "")
+ if err != nil {
  return fmt.Errorf("add a file to the file store: %w", err)
  }
+ fileDescriptors = append(fileDescriptors, fileDescriptor)
  }
 
  // 2. Pack the files and tag the packed manifest
  artifactType := "example/files"
- manifestDescriptor, err := oras.PackManifest(ctx, fs, oras.PackManifestVersion1_1, artifactType, oras.PackManifestOptions{})
+ manifestDescriptor, err := oras.PackManifest(ctx, fs, oras.PackManifestVersion1_1, artifactType, oras.PackManifestOptions{
+ Layers: fileDescriptors,
+ })
  if err != nil {
  return fmt.Errorf("pack files: %w", err)
  }