加载 Docker 镜像失败

问：

我正在使用 ，以格式加载 docker 映像。golangdocker client.tar

func loadImageFromTar(cli *client.Client, tarFilePath string) (string, error) {
    // Read tar file
    tarFile, err := os.Open(tarFilePath)
    if err != nil {
        return "", fmt.Errorf("failed to open tar file: %w", err)
    }
    defer tarFile.Close()

    // Create a pipe to stream data between tar reader and Docker client
    pr, pw := io.Pipe()

    // Set up a WaitGroup for synchronization
    var wg sync.WaitGroup
    wg.Add(2)

    // Load the Docker image in a separate goroutine
    var imageLoadResponse types.ImageLoadResponse
    go func() {
        defer wg.Done()
        imageLoadResponse, err = cli.ImageLoad(context.Background(), pr, false)
        if err != nil {
            err = fmt.Errorf("failed to load Docker image: %w", err)
        }
    }()

    // Read tar file metadata and copy the tar file to the pipe writer in a separate goroutine
    var repoTag string
    go func() {
        defer wg.Done()
        defer pw.Close()

        tarReader := tar.NewReader(tarFile)

        for {
            header, err := tarReader.Next()
            if err == io.EOF {
                break
            }
            if err != nil {
                err = fmt.Errorf("failed to read tar header: %w", err)
                fmt.Printf("Error: %v", err)
                return
            }

            // Extract the repository and tag from the manifest file
            if header.Name == "manifest.json" {
                data, err := io.ReadAll(tarReader)
                if err != nil {
                    err = fmt.Errorf("failed to read manifest file: %w", err)
                    fmt.Printf("Error: %v", err)
                    return
                }

                var manifest []map[string]interface{}
                err = json.Unmarshal(data, &manifest)
                if err != nil {
                    err = fmt.Errorf("failed to unmarshal manifest: %w", err)
                    fmt.Printf("Error: %v", err)
                    return
                }

                repoTag = manifest[0]["RepoTags"].([]interface{})[0].(string)
            }

            // Copy the tar file data to the pipe writer
            _, err = io.Copy(pw, tarReader)
            if err != nil {
                err = fmt.Errorf("failed to copy tar data: %w", err)
                fmt.Printf("Error: %v", err)
                return
            }
        }
    }()

    // Wait for both goroutines to finish
    wg.Wait()

    // Check if any error occurred in the goroutines
    if err != nil {
        return "", err
    }

    // Close the image load response body
    defer imageLoadResponse.Body.Close()

    // Get the image ID
    imageID, err := getImageIDByRepoTag(cli, repoTag)
    if err != nil {
        return "", fmt.Errorf("failed to get image ID: %w", err)
    }

    return imageID, nil
}

函数：getImageIDByRepoTag

func getImageIDByRepoTag(cli *client.Client, repoTag string) (string, error) {
    images, err := cli.ImageList(context.Background(), types.ImageListOptions{})
    if err != nil {
        return "", fmt.Errorf("failed to list images: %w", err)
    }

    for _, image := range images {
        for _, tag := range image.RepoTags {
            if tag == repoTag {
                return image.ID, nil
            }
        }
    }

    return "", fmt.Errorf("image ID not found for repo tag: %s", repoTag)
}

始终返回 . 此外，当我运行时，我没有看到正在加载的图像。看起来图像加载未完成。getImageIDByRepoTagfmt.Errorf("image ID not found for repo tag: %s", repoTag)docker images

在我的其他代码中，尽管 docker 客户端立即返回，但 docker 映像加载通常需要时间。我通常会在检查之前增加大约 30 秒的等待时间。在这种情况下，增加等待时间也无济于事。cli.ImageLoadgetImageIDByRepoTag

谢谢