package daemon import ( "fmt" "github.com/docker/docker/runconfig" ) func (daemon *Daemon) ContainerStart(name string, hostConfig *runconfig.HostConfig) error { container, err := daemon.Get(name) if err != nil { return err } if container.IsPaused() { return fmt.Errorf("Cannot start a paused container, try unpause instead.") } if container.IsRunning() { return fmt.Errorf("Container already started") } if _, err = daemon.verifyContainerSettings(hostConfig, nil); err != nil { return err } // This is kept for backward compatibility - hostconfig should be passed when // creating a container, not during start. if hostConfig != nil { if err := daemon.setHostConfig(container, hostConfig); err != nil { return err } } if err := container.Start(); err != nil { return fmt.Errorf("Cannot start container %s: %s", name, err) } return nil }