runc-create-2.go

func startContainer(context *cli.Context, spec *specs.Spec, create bool) (int, error) {
	id := context.Args().First()
	if id == "" {
		return -1, errEmptyID
	}
	container, err := createContainer(context, id, spec)
	if err != nil {
		return -1, err
	}
	// Support on-demand socket activation by passing file descriptors into the container init process.
	listenFDs := []*os.File{}
	if os.Getenv("LISTEN_FDS") != "" {
		listenFDs = activation.Files(false)
	}
	r := &runner{
		enableSubreaper: !context.Bool("no-subreaper"),
		shouldDestroy:   true,
		container:       container,
		listenFDs:       listenFDs,
		consoleSocket:   context.String("console-socket"),
		detach:          context.Bool("detach"),
		pidFile:         context.String("pid-file"),
		create:          create,
	}
	return r.run(&spec.Process)
}