package main import ( "fmt" "os" "path/filepath" "runtime" "sort" "github.com/docker/docker/opts" "github.com/docker/docker/pkg/homedir" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/tlsconfig" ) type command struct { name string description string } type byName []command func (a byName) Len() int { return len(a) } func (a byName) Swap(i, j int) { a[i], a[j] = a[j], a[i] } func (a byName) Less(i, j int) bool { return a[i].name < a[j].name } var ( dockerCertPath = os.Getenv("DOCKER_CERT_PATH") dockerTlsVerify = os.Getenv("DOCKER_TLS_VERIFY") != "" dockerCommands = []command{ {"attach", "Attach to a running container"}, {"build", "Build an image from a Dockerfile"}, {"commit", "Create a new image from a container's changes"}, {"cp", "Copy files/folders from a container's filesystem to the host path"}, {"create", "Create a new container"}, {"diff", "Inspect changes on a container's filesystem"}, {"events", "Get real time events from the server"}, {"exec", "Run a command in a running container"}, {"export", "Stream the contents of a container as a tar archive"}, {"history", "Show the history of an image"}, {"images", "List images"}, {"import", "Create a new filesystem image from the contents of a tarball"}, {"info", "Display system-wide information"}, {"inspect", "Return low-level information on a container or image"}, {"kill", "Kill a running container"}, {"load", "Load an image from a tar archive"}, {"login", "Register or log in to a Docker registry server"}, {"logout", "Log out from a Docker registry server"}, {"logs", "Fetch the logs of a container"}, {"port", "Lookup the public-facing port that is NAT-ed to PRIVATE_PORT"}, {"pause", "Pause all processes within a container"}, {"ps", "List containers"}, {"pull", "Pull an image or a repository from a Docker registry server"}, {"push", "Push an image or a repository to a Docker registry server"}, {"rename", "Rename an existing container"}, {"restart", "Restart a running container"}, {"rm", "Remove one or more containers"}, {"rmi", "Remove one or more images"}, {"run", "Run a command in a new container"}, {"save", "Save an image to a tar archive"}, {"search", "Search for an image on the Docker Hub"}, {"start", "Start a stopped container"}, {"stats", "Display a stream of a containers' resource usage statistics"}, {"stop", "Stop a running container"}, {"tag", "Tag an image into a repository"}, {"top", "Lookup the running processes of a container"}, {"unpause", "Unpause a paused container"}, {"version", "Show the Docker version information"}, {"wait", "Block until a container stops, then print its exit code"}, } ) func init() { if dockerCertPath == "" { dockerCertPath = filepath.Join(homedir.Get(), ".docker") } } func getDaemonConfDir() string { // TODO: update for Windows daemon if runtime.GOOS == "windows" { return filepath.Join(homedir.Get(), ".docker") } return "/etc/docker" } var ( flVersion = flag.Bool([]string{"v", "-version"}, false, "Print version information and quit") flDaemon = flag.Bool([]string{"d", "-daemon"}, false, "Enable daemon mode") flDebug = flag.Bool([]string{"D", "-debug"}, false, "Enable debug mode") flLogLevel = flag.String([]string{"l", "-log-level"}, "info", "Set the logging level") flTls = flag.Bool([]string{"-tls"}, false, "Use TLS; implied by --tlsverify") flHelp = flag.Bool([]string{"h", "-help"}, false, "Print usage") flTlsVerify = flag.Bool([]string{"-tlsverify"}, dockerTlsVerify, "Use TLS and verify the remote") // these are initialized in init() below since their default values depend on dockerCertPath which isn't fully initialized until init() runs tlsOptions tlsconfig.Options flTrustKey *string flHosts []string ) func setDefaultConfFlag(flag *string, def string) { if *flag == "" { if *flDaemon { *flag = filepath.Join(getDaemonConfDir(), def) } else { *flag = filepath.Join(homedir.Get(), ".docker", def) } } } func init() { var placeholderTrustKey string // TODO use flag flag.String([]string{"i", "-identity"}, "", "Path to libtrust key file") flTrustKey = &placeholderTrustKey flag.StringVar(&tlsOptions.CAFile, []string{"-tlscacert"}, filepath.Join(dockerCertPath, defaultCaFile), "Trust certs signed only by this CA") flag.StringVar(&tlsOptions.CertFile, []string{"-tlscert"}, filepath.Join(dockerCertPath, defaultCertFile), "Path to TLS certificate file") flag.StringVar(&tlsOptions.KeyFile, []string{"-tlskey"}, filepath.Join(dockerCertPath, defaultKeyFile), "Path to TLS key file") opts.HostListVar(&flHosts, []string{"H", "-host"}, "Daemon socket(s) to connect to") flag.Usage = func() { fmt.Fprint(os.Stdout, "Usage: docker [OPTIONS] COMMAND [arg...]\n\nA self-sufficient runtime for linux containers.\n\nOptions:\n") flag.CommandLine.SetOutput(os.Stdout) flag.PrintDefaults() help := "\nCommands:\n" sort.Sort(byName(dockerCommands)) 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) } }