func revisePidFile(context *cli.Context) error {
pidFile := context.String("pid-file")
if pidFile == "" {
return nil
}
// convert pid-file to an absolute path so we can write to the right
// file after chdir to bundle
pidFile, err := filepath.Abs(pidFile)
if err != nil {
return err
}
err = context.Set("pid-file", pidFile)
if err != nil {
return err
}
return nil
}