Use consistent command description

Signed-off-by: Lei Jitang <leijitang@huawei.com>

common.go

@@ -18,3 +18,61 @@ type CommonFlags struct {
 	TLSOptions *tlsconfig.Options
 	TrustKey   string
 }
+
+// Command is the struct contains command name and description
+type Command struct {
+	Name        string
+	Description string
+}
+
+var 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 between a container and the local filesystem"},
+	{"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", "Export a container's filesystem as a tar archive"},
+	{"history", "Show the history of an image"},
+	{"images", "List images"},
+	{"import", "Import the contents from a tarball to create a filesystem image"},
+	{"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 or STDIN"},
+	{"login", "Register or log in to a Docker registry"},
+	{"logout", "Log out from a Docker registry"},
+	{"logs", "Fetch the logs of a container"},
+	{"pause", "Pause all processes within a container"},
+	{"port", "List port mappings or a specific mapping for the CONTAINER"},
+	{"ps", "List containers"},
+	{"pull", "Pull an image or a repository from a registry"},
+	{"push", "Push an image or a repository to a registry"},
+	{"rename", "Rename a container"},
+	{"restart", "Restart a 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(s) to a tar archive"},
+	{"search", "Search the Docker Hub for images"},
+	{"start", "Start one or more stopped containers"},
+	{"stats", "Display a live stream of container(s) resource usage statistics"},
+	{"stop", "Stop a running container"},
+	{"tag", "Tag an image into a repository"},
+	{"top", "Display the running processes of a container"},
+	{"unpause", "Unpause all processes within a container"},
+	{"version", "Show the Docker version information"},
+	{"volume", "Manage Docker volumes"},
+	{"wait", "Block until a container stops, then print its exit code"},
+}
+
+// DockerCommands stores all the docker command
+var DockerCommands = make(map[string]Command)
+
+func init() {
+	for _, cmd := range dockerCommands {
+		DockerCommands[cmd.Name] = cmd
+	}
+}