dotcloud/docker

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

import (
    "context"
    "io"
    "net/http"
    "net/url"
    "strings"

    "github.com/distribution/reference"
    "github.com/docker/docker/api/types/image"
    "github.com/docker/docker/api/types/registry"
)

// ImageCreate creates a new image based on the parent options.
// It returns the JSON content in the response body.
func (cli *Client) ImageCreate(ctx context.Context, parentReference string, options image.CreateOptions) (io.ReadCloser, error) {
    ref, err := reference.ParseNormalizedNamed(parentReference)
    if err != nil {
        return nil, err
    }

    query := url.Values{}
    query.Set("fromImage", reference.FamiliarName(ref))
    query.Set("tag", getAPITagFromNamedRef(ref))
    if options.Platform != "" {
        query.Set("platform", strings.ToLower(options.Platform))
    }
    resp, err := cli.tryImageCreate(ctx, query, options.RegistryAuth)
    if err != nil {
        return nil, err
    }
    return resp.body, nil
}

func (cli *Client) tryImageCreate(ctx context.Context, query url.Values, registryAuth string) (serverResponse, error) {
    return cli.post(ctx, "/images/create", query, nil, http.Header{
        registry.AuthHeader: {registryAuth},
    })
}