[gtk/gtk-3-22: 2/2] Merge branch 'gitlab-ci-gtk-3-22' into 'gtk-3-22'

[Christoph Reiter <creiter src gnome org>]

commit 119d8f996f28c54e5cfc837e6988f6f40408bcb5
Merge: 5ca21f6dbb 81c4fa5d50
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Sun Mar 4 11:54:24 2018 +0000

    Merge branch 'gitlab-ci-gtk-3-22' into 'gtk-3-22'
    
    Add gitlab-ci support using a prebuilt docker image
    
    See merge request GNOME/gtk!18

 .gitlab-ci.yml            | 18 ++++++++++++++
 .gitlab-ci/Dockerfile     | 60 +++++++++++++++++++++++++++++++++++++++++++++++
 .gitlab-ci/run-docker.sh  | 19 +++++++++++++++
 .gitlab-ci/test-docker.sh |  6 +++++
 4 files changed, 103 insertions(+)
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