vendor: update buildkit with typed errors support

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/docker/cli/cli-plugins/manager/error.go

@@ -25,6 +25,11 @@ func (e *pluginError) Cause() error {
 	return e.cause
 }
 
+// Unwrap provides compatibility for Go 1.13 error chains.
+func (e *pluginError) Unwrap() error {
+	return e.cause
+}
+
 // MarshalText marshalls the pluginError into a textual form.
 func (e *pluginError) MarshalText() (text []byte, err error) {
 	return []byte(e.cause.Error()), nil

vendor/github.com/docker/cli/cli-plugins/manager/manager.go

@@ -11,8 +11,8 @@ import (
 
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/config"
+	"github.com/fvbommel/sortorder"
 	"github.com/spf13/cobra"
-	"vbom.ml/util/sortorder"
 )
 
 // ReexecEnvvar is the name of an ennvar which is set to the command

vendor/github.com/docker/cli/cli-plugins/manager/metadata.go

@@ -10,7 +10,7 @@ const (
 	MetadataSubcommandName = "docker-cli-plugin-metadata"
 )
 
-// Metadata provided by the plugin. See docs/extend/cli_plugins.md for canonical information.
+// Metadata provided by the plugin.
 type Metadata struct {
 	// SchemaVersion describes the version of this struct. Mandatory, must be "0.1.0"
 	SchemaVersion string `json:",omitempty"`

vendor/github.com/docker/cli/cli-plugins/plugin/plugin.go

@@ -24,7 +24,8 @@ import (
 // called.
 var PersistentPreRunE func(*cobra.Command, []string) error
 
-func runPlugin(dockerCli *command.DockerCli, plugin *cobra.Command, meta manager.Metadata) error {
+// RunPlugin executes the specified plugin command
+func RunPlugin(dockerCli *command.DockerCli, plugin *cobra.Command, meta manager.Metadata) error {
 	tcmd := newPluginCommand(dockerCli, plugin, meta)
 
 	var persistentPreRunOnce sync.Once
@@ -60,7 +61,7 @@ func Run(makeCmd func(command.Cli) *cobra.Command, meta manager.Metadata) {
 
 	plugin := makeCmd(dockerCli)
 
-	if err := runPlugin(dockerCli, plugin, meta); err != nil {
+	if err := RunPlugin(dockerCli, plugin, meta); err != nil {
 		if sterr, ok := err.(cli.StatusError); ok {
 			if sterr.Status != "" {
 				fmt.Fprintln(dockerCli.Err(), sterr.Status)
@@ -127,7 +128,7 @@ func newPluginCommand(dockerCli *command.DockerCli, plugin *cobra.Command, meta
 	}
 	opts, flags := cli.SetupPluginRootCommand(cmd)
 
-	cmd.SetOutput(dockerCli.Out())
+	cmd.SetOut(dockerCli.Out())
 
 	cmd.AddCommand(
 		plugin,