dotcloud/docker

package client // import "github.com/docker/docker/client"

import (
    "context"
    "io"
    "net/url"
)

// ImageSave retrieves one or more images from the docker host as an io.ReadCloser.
// It's up to the caller to store the images and close the stream.
func (cli *Client) ImageSave(ctx context.Context, imageIDs []string) (io.ReadCloser, error) {
    query := url.Values{
        "names": imageIDs,
    }

    resp, err := cli.get(ctx, "/images/get", query, nil)
    if err != nil {
        return nil, err
    }
    return resp.body, nil
}