Update command.go

command/command.go

@@ -6,8 +6,8 @@ import "context"
 // use Packer. A call returns a int that will be the exit code of Packer,
 // everything else is up to the implementer.
 type PackerInterface interface {
-	Build(ctx context.Context, args BuildArgs) int
-	Console(ctx context.Context, args ConsoleArgs) int
-	Fix(ctx context.Context, args FixArgs) int
-	Validate(ctx context.Context, args ValidateArgs) int
+	Build(ctx context.Context, args *BuildArgs) int
+	Console(ctx context.Context, args *ConsoleArgs) int
+	Fix(ctx context.Context, args *FixArgs) int
+	Validate(ctx context.Context, args *ValidateArgs) int
 }