func (m *MountPoint) Setup() (string, error) {
    if m.Volume != nil {
        return m.Volume.Mount()
    }
    if len(m.Source) > 0 {
        if _, err := os.Stat(m.Source); err != nil {
            if !os.IsNotExist(err) {
                return "", err
            }
            if runtime.GOOS != "windows" { // Windows does not have deprecation issues here
                logrus.Warnf("Auto-creating non-existent volume host path %s, this is deprecated and will be removed soon", m.Source)
                if err := system.MkdirAll(m.Source, 0755); err != nil {
                    return "", err
                }
            }
        }
        return m.Source, nil
    }
    return "", derr.ErrorCodeMountSetup
}

docker run --rm -ti -v /hello:/hello ubuntu bash