[crosstool-ng/crosstool-ng] cf7d68: Add CentOS7 docker configuration

[Alexey Neyman]

  Branch: refs/heads/master
  Home:   https://github.com/crosstool-ng/crosstool-ng
  Commit: cf7d68a8a40b6d1f4dbe1916086922036edcd073
      https://github.com/crosstool-ng/crosstool-ng/commit/cf7d68a8a40b6d1f4dbe1916086922036edcd073
  Author: Alexey Neyman <stilor@att.net>
  Date:   2018-10-22 (Mon, 22 Oct 2018)

  Changed paths:
    A testing/docker/centos7/Dockerfile

  Log Message:
  -----------
  Add CentOS7 docker configuration

Signed-off-by: Alexey Neyman <stilor@att.net>


  Commit: 675c392d1a87536061fa25807e2ef8d350c53c41
      https://github.com/crosstool-ng/crosstool-ng/commit/675c392d1a87536061fa25807e2ef8d350c53c41
  Author: Alexey Neyman <stilor@att.net>
  Date:   2018-10-22 (Mon, 22 Oct 2018)

  Changed paths:
    M configure.ac

  Log Message:
  -----------
  Check for `file` presence (missing in default CentOS7)

Signed-off-by: Alexey Neyman <stilor@att.net>


  Commit: 6b53ad77c25f1013918e2da017c427e9dfb59449
      https://github.com/crosstool-ng/crosstool-ng/commit/6b53ad77c25f1013918e2da017c427e9dfb59449
  Author: Alexey Neyman <stilor@att.net>
  Date:   2018-10-22 (Mon, 22 Oct 2018)

  Changed paths:
    M configure.ac
    A testing/docker/centos7/Dockerfile

  Log Message:
  -----------
  Merge pull request #1066 from stilor/centos7-docker

Centos7 docker


Compare: https://github.com/crosstool-ng/crosstool-ng/compare/2157b5392018...6b53ad77c25f
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