// ImageByID returns the specified image within the named Docker image repository
func (c *connection) ImageByID(namespace, name, imageID string) (*Image, error) {
if len(namespace) == 0 && imageapi.IsRegistryDockerHub(c.url.Host) {
namespace = imageapi.DockerDefaultNamespace
}
if len(name) == 0 {
return nil, fmt.Errorf("image name must be specified")
}
repo, err := c.getCachedRepository(fmt.Sprintf("%s/%s", namespace, name))
if err != nil {
return nil, err
}
return repo.getImage(c, imageID, "")
}
// ImageByTag returns the specified image within the named Docker image repository
func (c *connection) ImageByTag(namespace, name, tag string) (*Image, error) {
if len(namespace) == 0 && imageapi.IsRegistryDockerHub(c.url.Host) {
namespace = imageapi.DockerDefaultNamespace
}
if len(name) == 0 {
return nil, fmt.Errorf("image name must be specified")
}
searchTag := tag
if len(searchTag) == 0 {
searchTag = imageapi.DefaultImageTag
}
repo, err := c.getCachedRepository(fmt.Sprintf("%s/%s", namespace, name))
if err != nil {
return nil, err
}
return repo.getTaggedImage(c, searchTag, tag)
}