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The `docker push` command up until docker v0.9.1 always pushed all tags of a given image, so `docker push foo/bar` would push (e.g.) all of `foo/bar:latest`, `foo:/bar:v1`, and `foo/bar:v1.0.0`. Pushing all tags of an image was not desirable in many case, so docker v0.10.0 enhanced `docker push` to optionally specify a tag to push (`docker push foo/bar:v1`) (see issue 3411 and PR 4948 (commite648a186d6). This behavior exists up until today, and is confusing, because unlike other commands, `docker push` does not default to use the `:latest` tag when omitted, but instead makes it push "all tags of the image". `docker pull` had a similar behavior, but PR 7759 (9c08364a41) changed the behavior to default to the `:latest` tag, and added a `--all-tags` flag to the CLI to optionally pull all images. This patch implements the API client changes to make `docker push` match the behavior of `docker pull`, and default to pull a single image, unless the `all` option is passed. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
package client // import "github.com/docker/docker/client"
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import (
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"context"
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"errors"
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"io"
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"net/url"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/errdefs"
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)
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// ImagePush requests the docker host to push an image to a remote registry.
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// It executes the privileged function if the operation is unauthorized
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// and it tries one more time.
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// It's up to the caller to handle the io.ReadCloser and close it properly.
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func (cli *Client) ImagePush(ctx context.Context, image string, options types.ImagePushOptions) (io.ReadCloser, error) {
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ref, err := reference.ParseNormalizedNamed(image)
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if err != nil {
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return nil, err
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}
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if _, isCanonical := ref.(reference.Canonical); isCanonical {
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return nil, errors.New("cannot push a digest reference")
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}
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name := reference.FamiliarName(ref)
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query := url.Values{}
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if !options.All {
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ref = reference.TagNameOnly(ref)
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if tagged, ok := ref.(reference.Tagged); ok {
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query.Set("tag", tagged.Tag())
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}
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}
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resp, err := cli.tryImagePush(ctx, name, query, options.RegistryAuth)
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if errdefs.IsUnauthorized(err) && options.PrivilegeFunc != nil {
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newAuthHeader, privilegeErr := options.PrivilegeFunc()
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if privilegeErr != nil {
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return nil, privilegeErr
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}
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resp, err = cli.tryImagePush(ctx, name, query, newAuthHeader)
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}
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if err != nil {
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return nil, err
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}
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return resp.body, nil
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}
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func (cli *Client) tryImagePush(ctx context.Context, imageID string, query url.Values, registryAuth string) (serverResponse, error) {
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headers := map[string][]string{"X-Registry-Auth": {registryAuth}}
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return cli.post(ctx, "/images/"+imageID+"/push", query, nil, headers)
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}
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