Feature: adds '--allow-insecure-registry' for cosign load (#3000)

* Feature: adds '--allow-insecure-registry' for cosign load

Signed-off-by: Mritunjay <mritunjaysharma394@gmail.com>

* use existing opts to add it

Signed-off-by: Mritunjay <mritunjaysharma394@gmail.com>

---------

Signed-off-by: Mritunjay <mritunjaysharma394@gmail.com>

cmd/cosign/cli/load.go

@@ -20,9 +20,11 @@ import (
 	"fmt"
 
 	"github.com/google/go-containerregistry/pkg/name"
+
 	"github.com/sigstore/cosign/v2/cmd/cosign/cli/options"
 	"github.com/sigstore/cosign/v2/pkg/oci/layout"
 	"github.com/sigstore/cosign/v2/pkg/oci/remote"
+
 	"github.com/spf13/cobra"
 )
 
@@ -45,7 +47,7 @@ func Load() *cobra.Command {
 	return cmd
 }
 
-func LoadCmd(_ context.Context, opts options.LoadOptions, imageRef string) error {
+func LoadCmd(ctx context.Context, opts options.LoadOptions, imageRef string) error {
 	ref, err := name.ParseReference(imageRef)
 	if err != nil {
 		return fmt.Errorf("parsing image name %s: %w", imageRef, err)
@@ -56,5 +58,11 @@ func LoadCmd(_ context.Context, opts options.LoadOptions, imageRef string) error
 	if err != nil {
 		return fmt.Errorf("signed image index: %w", err)
 	}
-	return remote.WriteSignedImageIndexImages(ref, sii)
+
+	ociremoteOpts, err := opts.Registry.ClientOpts(ctx)
+	if err != nil {
+		return err
+	}
+
+	return remote.WriteSignedImageIndexImages(ref, sii, ociremoteOpts...)
 }

cmd/cosign/cli/options/load.go

@@ -22,12 +22,14 @@ import (
 // LoadOptions is the top level wrapper for the load command.
 type LoadOptions struct {
 	Directory string
+	Registry  RegistryOptions
 }
 
 var _ Interface = (*LoadOptions)(nil)
 
 // AddFlags implements Interface
 func (o *LoadOptions) AddFlags(cmd *cobra.Command) {
+	o.Registry.AddFlags(cmd)
 	cmd.Flags().StringVar(&o.Directory, "dir", "",
 		"path to directory where the signed image is stored on disk")
 	_ = cmd.Flags().SetAnnotation("dir", cobra.BashCompSubdirsInDir, []string{})