【docker API】docker client go 之image接口

缺乏、安全感 2022-05-22 04:20 191阅读 0赞

1 docker client 创建

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func NewClient(server, port, version string) (*client.Client, error) {
       host := "tcp://" + server + ":" + port
       return client.NewClient(host, version, nil, map[string]string{
       "Content-type": "application/x-tar"})
    }

2 docker build image

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根据ImageBuild接口，生成的镜像名为ImageBuildOptions，比较鸡贼，一直在找哪个是repo名字，内心崩溃

设置Labels好处是ListImage可以根据这个过滤参照https://docs.docker.com/engine/api/v1.37/\#operation/ImageList

func BuildImage(cli *client.Client, tarFile, project, imageName string) error {
       dockerBuildContext, err := os.Open(tarFile)
       if err != nil {
          return err
       }
       defer dockerBuildContext.Close()
    
       buildOptions := types.ImageBuildOptions{
          Dockerfile: "Dockerfile", // optional, is the default Tags:       []string{imageName}, Labels: map[string]string{
             project: "project", }, }
    
       output, err := cli.ImageBuild(context.Background(), dockerBuildContext, buildOptions)
       if err != nil {
          return err
       }
    
       body, err := ioutil.ReadAll(output.Body)
       if err != nil {
          return err
       }
       dlog.Infof("Build resource image output: %v", string(body))
    
       if strings.Contains(string(body), "error") {
          return fmt.Errorf("build image to docker error")
       }
    
       return nil
    }

3 docker push image

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对于docker 需要认证，直接调用ImagePush没什么好说的了

func PushImage(cli *client.Client, registryUser, registryPassword, image string) error {
       authConfig := types.AuthConfig{
          Username: registryUser, Password: registryPassword, }
       encodedJSON, err := json.Marshal(authConfig)
       if err != nil {
          return err
       }
       dlog.Infof("Push docker image registry: %v %v", registryUser, registryPassword)
    
       authStr := base64.URLEncoding.EncodeToString(encodedJSON)
       out, err := cli.ImagePush(context.TODO(), image, types.ImagePushOptions{RegistryAuth: authStr})
       if err != nil {
          return err
       }
    
       body, err := ioutil.ReadAll(out)
       if err != nil {
          return err
       }
       dlog.Infof("Push docker image output: %v", string(body))
    
       if strings.Contains(string(body), "error") {
          return fmt.Errorf("push image to docker error")
       }
    
       return nil
    }

其他接口雷同，一看既会

**参考**

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https://docs.docker.com/engine/api/v1.37/\#operation/ImageCreate