package client import ( "fmt" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/registry" ) // CmdLogout logs a user out from a Docker registry. // // If no server is specified, the user will be logged out from the registry's index server. // // Usage: docker logout [SERVER] func (cli *DockerCli) CmdLogout(args ...string) error { cmd := cli.Subcmd("logout", []string{"[SERVER]"}, "Log out from a Docker registry, if no server is\nspecified \""+registry.IndexServerAddress()+"\" is the default.", true) cmd.Require(flag.Max, 1) cmd.ParseFlags(args, true) serverAddress := registry.IndexServerAddress() if len(cmd.Args()) > 0 { serverAddress = cmd.Arg(0) } if _, ok := cli.configFile.AuthConfigs[serverAddress]; !ok { fmt.Fprintf(cli.out, "Not logged in to %s\n", serverAddress) } else { fmt.Fprintf(cli.out, "Remove login credentials for %s\n", serverAddress) delete(cli.configFile.AuthConfigs, serverAddress) if err := cli.configFile.Save(); err != nil { return fmt.Errorf("Failed to save docker config: %v", err) } } return nil }