Golang docker pull image and run container

docker_run.go

package main

import (
	"io"
	"os"

	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/container"
	"github.com/docker/docker/client"
	"golang.org/x/net/context"
)

func main() {
	ctx := context.Background()
	cli, err := client.NewEnvClient()
	if err != nil {
		panic(err)
	}

	reader, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
	if err != nil {
		panic(err)
	}
	io.Copy(os.Stdout, reader)

	resp, err := cli.ContainerCreate(ctx, &container.Config{
		Image: "alpine",
		Cmd:   []string{"echo", "hello world"},
		Tty:   true,
	}, nil, nil, "")
	if err != nil {
		panic(err)
	}

	if err := cli.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {
		panic(err)
	}

	statusCh, errCh := cli.ContainerWait(ctx, resp.ID, container.WaitConditionNotRunning)
	select {
	case err := <-errCh:
		if err != nil {
			panic(err)
		}
	case <-statusCh:
	}

	out, err := cli.ContainerLogs(ctx, resp.ID, types.ContainerLogsOptions{ShowStdout: true})
	if err != nil {
		panic(err)
	}

	io.Copy(os.Stdout, out)
}