package main import ( "fmt" "os" "github.com/Sirupsen/logrus" "github.com/docker/docker/api/client" "github.com/docker/docker/autogen/dockerversion" "github.com/docker/docker/cli" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/reexec" "github.com/docker/docker/pkg/term" "github.com/docker/docker/utils" ) func main() { if reexec.Init() { return } // Set terminal emulation based on platform as required. stdin, stdout, stderr := term.StdStreams() logrus.SetOutput(stderr) flag.Merge(flag.CommandLine, clientFlags.FlagSet, commonFlags.FlagSet) flag.Usage = func() { fmt.Fprint(os.Stdout, "Usage: docker [OPTIONS] COMMAND [arg...]\n"+daemonUsage+" docker [ --help | -v | --version ]\n\n") fmt.Fprint(os.Stdout, "A self-sufficient runtime for containers.\n\nOptions:\n") flag.CommandLine.SetOutput(os.Stdout) flag.PrintDefaults() help := "\nCommands:\n" for _, cmd := range dockerCommands { help += fmt.Sprintf(" %-10.10s%s\n", cmd.name, cmd.description) } help += "\nRun 'docker COMMAND --help' for more information on a command." fmt.Fprintf(os.Stdout, "%s\n", help) } flag.Parse() if *flVersion { showVersion() return } clientCli := client.NewDockerCli(stdin, stdout, stderr, clientFlags) // TODO: remove once `-d` is retired handleGlobalDaemonFlag() if *flHelp { // if global flag --help is present, regardless of what other options and commands there are, // just print the usage. flag.Usage() return } c := cli.New(clientCli, daemonCli) if err := c.Run(flag.Args()...); err != nil { if sterr, ok := err.(cli.StatusError); ok { if sterr.Status != "" { fmt.Fprintln(os.Stderr, sterr.Status) os.Exit(1) } os.Exit(sterr.StatusCode) } fmt.Fprintln(os.Stderr, err) os.Exit(1) } } func showVersion() { if utils.ExperimentalBuild() { fmt.Printf("Docker version %s, build %s, experimental\n", dockerversion.VERSION, dockerversion.GITCOMMIT) } else { fmt.Printf("Docker version %s, build %s\n", dockerversion.VERSION, dockerversion.GITCOMMIT) } }