[GRASS-git] [OSGeo/grass] aca227: update python3 patch and add pdal package (#378)

[mmacata]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: aca22794878d66319725d9114bbc986882cf1f75
      https://github.com/OSGeo/grass/commit/aca22794878d66319725d9114bbc986882cf1f75
  Author: mmacata <mmacata at users.noreply.github.com>
  Date:   2020-02-26 (Wed, 26 Feb 2020)

  Changed paths:
    M docker/alpine/Dockerfile_alpine

  Log Message:
  -----------
  update python3 patch and add pdal package (#378)