[librsvg: 7/7] Merge branch 'madds-docker' into 'master'

[Marge Bot <marge-bot src gnome org>]

commit bf47971e680353d9c8e111dc3ee5a5fde8495d46
Merge: c6474361 dab1044f
Author: Marge Bot <marge-bot gnome org>
Date:   Wed Aug 25 03:27:31 2021 +0000

    Merge branch 'madds-docker' into 'master'
    
    Improve docker tests
    
    See merge request GNOME/librsvg!579

 CONTRIBUTING.md                             |   7 +
 tools/docker/README.md                      |  50 +++--
 tools/docker/build-librsvg.sh               |   4 -
 tools/docker/debian/Dockerfile              |   5 -
 tools/docker/docker-test.sh                 | 276 ++++++++++++++++++----------
 tools/docker/fedora/Dockerfile              |   5 -
 tools/docker/librsvg-base/debian/Dockerfile |   2 +-
 tools/docker/librsvg-base/fedora/Dockerfile |   2 +-
 tools/docker/opensuse/Dockerfile            |   5 -
 9 files changed, 223 insertions(+), 133 deletions(-)
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