feat: add cmd image copy

cmd/kubevpn/cmds/imagecopy.go

@@ -0,0 +1,43 @@
+package cmds
+
+import (
+	"github.com/spf13/cobra"
+	cmdutil "k8s.io/kubectl/pkg/cmd/util"
+
+	"github.com/wencaiwulue/kubevpn/v2/pkg/util"
+	"github.com/wencaiwulue/kubevpn/v2/pkg/util/regctl"
+)
+
+func CmdImageCopy(_ cmdutil.Factory) *cobra.Command {
+	var imageCmd = &cobra.Command{
+		Use:   "image <cmd>",
+		Short: "copy images",
+	}
+
+	copyCmd := &cobra.Command{
+		Use:     "copy <src_image_ref> <dst_image_ref>",
+		Aliases: []string{"cp"},
+		Short:   "copy or re-tag image",
+		Long: `Copy or re-tag an image. This works between registries and only pulls layers
+that do not exist at the target. In the same registry it attempts to mount
+the layers between repositories. And within the same repository it only
+sends the manifest with the new tag.`,
+		Example: `
+# copy an image
+regctl image copy ghcr.io/kubenetworks/kubevpn:latest docker.io/naison/kubevpn:latest
+
+# re-tag an image
+regctl image copy registry.example.org/repo:v1.2.3 registry.example.org/repo:v1`,
+		Args: cobra.MatchAll(cobra.ExactArgs(2), cobra.OnlyValidArgs),
+		PreRunE: func(cmd *cobra.Command, args []string) error {
+			util.InitLoggerForClient(false)
+			return nil
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			err := regctl.TransferImageWithRegctl(cmd.Context(), args[0], args[1])
+			return err
+		},
+	}
+	imageCmd.AddCommand(copyCmd)
+	return imageCmd
+}

cmd/kubevpn/cmds/root.go

@@ -77,6 +77,7 @@ func NewKubeVPNCommand() *cobra.Command {
 				CmdConfig(factory),
 				CmdSSH(factory),
 				CmdSSHDaemon(factory),
+				CmdImageCopy(factory),
 				CmdLogs(factory),
 				CmdCp(factory),
 				CmdReset(factory),