You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: cmd.go
    path of file: ./repos/werf/pkg/container_backend/instruction
    
    the code of the file until where you have to start completion: package instruction

import (
	"context"
	"fmt"

	"github.com/moby/buildkit/frontend/dockerfile/instructions"

	"github.com/werf/werf/pkg/buildah"
	"github.com/werf/werf/pkg/container_backend"
)

type Cmd struct {
	instructions.CmdCommand
}

func NewCmd(i instructions.CmdCommand) *Cmd {
	return &Cmd{CmdCommand: i}
}

func (i *Cmd) UsesBuildContext() bool {
	return false
}

func (i *Cmd) Apply(ctx context.Context, containerName string, drv builda
    
func (i *Cmd) Apply(ctx context.Context, containerName string, drv buildah.Buildah, drvOpts buildah.CommonOpts, buildContextArchive container_backend.BuildContextArchiver) error {
	if err := drv.Config(ctx, containerName, buildah.ConfigOpts{
		CommonOpts:      drvOpts,
		Cmd:             i.CmdLine,
		CmdPrependShell: i.PrependShell,
	}); err != nil {
		return fmt.Errorf("error setting cmd %v for container %s: %w", i.CmdLine, containerName, err)
	}

	return nil
}