async function copyPreviousRelease() {
      const copyParameter = shipit.config.copy || '-a'
      if (!shipit.previousRelease || shipit.config.copy === false) return
      shipit.log('Copy previous release to "%s"', shipit.releasePath)
      await shipit.remote(
        util.format(
          'cp %s %s/. %s',
          copyParameter,
          path.join(shipit.releasesPath, shipit.previousRelease),
          shipit.releasePath,
        ),
      )
    }
Copy previous release to release dir.