package client import ( "fmt" "net/url" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/parsers" "github.com/docker/docker/registry" ) // CmdPush pushes an image or repository to the registry. // // Usage: docker push NAME[:TAG] func (cli *DockerCli) CmdPush(args ...string) error { cmd := cli.Subcmd("push", "NAME[:TAG]", "Push an image or a repository to the registry", true) cmd.Require(flag.Exact, 1) cmd.ParseFlags(args, true) name := cmd.Arg(0) remote, tag := parsers.ParseRepositoryTag(name) // Resolve the Repository name from fqn to RepositoryInfo repoInfo, err := registry.ParseRepositoryInfo(remote) if err != nil { return err } // Resolve the Auth config relevant for this server authConfig := registry.ResolveAuthConfig(cli.configFile, repoInfo.Index) // If we're not using a custom registry, we know the restrictions // applied to repository names and can warn the user in advance. // Custom repositories can have different rules, and we must also // allow pushing by image ID. if repoInfo.Official { username := authConfig.Username if username == "" { username = "" } return fmt.Errorf("You cannot push a \"root\" repository. Please rename your repository to / (ex: %s/%s)", username, repoInfo.LocalName) } v := url.Values{} v.Set("tag", tag) _, _, err = cli.clientRequestAttemptLogin("POST", "/images/"+remote+"/push?"+v.Encode(), nil, cli.out, repoInfo.Index, "push") return err }