ugrade urfave/cli to v2

cli/app/secret.go

@@ -17,7 +17,7 @@ import (
 	"github.com/docker/docker/api/types"
 	dockerClient "github.com/docker/docker/client"
 	"github.com/sirupsen/logrus"
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 var (
@@ -76,7 +76,7 @@ var appSecretGenerateCommand = cli.Command{
 			}
 		}
 
-		if len(c.Args()) == 1 && !allSecrets {
+		if c.Args().Len() == 1 && !allSecrets {
 			err := errors.New("missing arguments <secret>/<version> or '--all'")
 			internal.ShowSubcommandHelpAndError(c, err)
 		}
@@ -175,7 +175,7 @@ Example:
 	Action: func(c *cli.Context) error {
 		app := internal.ValidateApp(c)
 
-		if len(c.Args()) != 4 {
+		if c.Args().Len() != 4 {
 			internal.ShowSubcommandHelpAndError(c, errors.New("missing arguments?"))
 		}
 
@@ -419,10 +419,10 @@ var appSecretCommand = cli.Command{
 	Aliases:   []string{"s"},
 	Usage:     "Manage app secrets",
 	ArgsUsage: "<domain>",
-	Subcommands: []cli.Command{
-		appSecretGenerateCommand,
-		appSecretInsertCommand,
-		appSecretRmCommand,
-		appSecretLsCommand,
+	Subcommands: []*cli.Command{
+		&appSecretGenerateCommand,
+		&appSecretInsertCommand,
+		&appSecretRmCommand,
+		&appSecretLsCommand,
 	},
 }