[GRASS-git] [OSGeo/grass] 5708a6: specify dockerfile name

[Markus Neteler]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: 5708a6928385cd9708c01c93859f81524dd3b6eb
      https://github.com/OSGeo/grass/commit/5708a6928385cd9708c01c93859f81524dd3b6eb
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2019-09-20 (Fri, 20 Sep 2019)

  Changed paths:
    M docker/README_alpine.md

  Log Message:
  -----------
  specify dockerfile name