为什么我无法为docker获取go sdk？

我正在尝试运行docker go SDK示例文件。我是一个新来的语言；我不知道如何运行下面的docker SDK API代码。但是我试过了；请帮我纠正下面的错误

当我尝试运行此

时，运行example-ps.go

-内容如下

package main

import (
  "io"
  "os"

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

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

  _, err = cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
  if err != nil {
    panic(err)
  }

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

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

  if _, err = cli.ContainerWait(ctx, resp.ID); err != nil {
    panic(err)
  }

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

  io.Copy(os.Stdout, out)
}

我正在犯错误。如何导入这些库文件

example-ps.go:8:3: cannot find package "github.com/docker/docker/api/types" in any of:
        /usr/local/go/src/github.com/docker/docker/api/types (from $GOROOT)
        /Users/air/go/src/github.com/docker/docker/api/types (from $GOPATH)
example-ps.go:9:3: cannot find package "github.com/docker/docker/api/types/container" in any of:
        /usr/local/go/src/github.com/docker/docker/api/types/container (from $GOROOT)
        /Users/air/go/src/github.com/docker/docker/api/types/container (from $GOPATH)
example-ps.go:7:3: cannot find package "github.com/docker/docker/client" in any of:
        /usr/local/go/src/github.com/docker/docker/client (from $GOROOT)
        /Users/air/go/src/github.com/docker/docker/client (from $GOPATH)
example-ps.go:10:3: cannot find package "golang.org/x/net/context" in any of:
        /usr/local/go/src/golang.org/x/net/context (from $GOROOT)
        /Users/air/go/src/golang.org/x/net/context (from $GOPATH)

---

如果您正确安装了golang，只需在golang代码所在的目录中发出此命令

go get -v -t ./...

它将安装上游库。。。然后你可以编译你的代码。。。详情请参阅

go help packages

简而言之，

/…

将安装当前目录中任何go文件的

导入
中提到的所有软件包[以及递归的上游软件包等]

如果您曾经花费数天的时间手动安装任何其他语言的上游库，您将明白这是多么大的救命恩人。。。是的，我正在看你的C、C++、java，尤其是Python，它有最粗糙的最不相交的库导入阴谋咒语炼金术< /P>它工作了，谢谢。如果您提供一点理论上的解释，命令将很有帮助。或引用。
/…
-它的作用是什么？@Sam“递归获取此目录中的所有导入引用以及包含所有子目录的扩展切片”