package client import ( "net/url" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/parsers" "github.com/docker/docker/registry" ) // CmdTag tags an image into a repository. // // Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG] func (cli *DockerCli) CmdTag(args ...string) error { cmd := cli.Subcmd("tag", "IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]", "Tag an image into a repository", true) force := cmd.Bool([]string{"f", "#force", "-force"}, false, "Force") cmd.Require(flag.Exact, 2) cmd.ParseFlags(args, true) var ( repository, tag = parsers.ParseRepositoryTag(cmd.Arg(1)) v = url.Values{} ) //Check if the given image name can be resolved if err := registry.ValidateRepositoryName(repository); err != nil { return err } v.Set("repo", repository) v.Set("tag", tag) if *force { v.Set("force", "1") } if _, _, err := readBody(cli.call("POST", "/images/"+cmd.Arg(0)+"/tag?"+v.Encode(), nil, nil)); err != nil { return err } return nil }