[gtk/ci-update] ci: Install Monospace fonts

[Emmanuele Bassi <ebassi src gnome org>]

commit c4f8a384eb23e01acdad307d6063241005776385
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Apr 12 20:03:11 2019 +0100

    ci: Install Monospace fonts
    
    The reftests require them.

 .gitlab-ci.yml           | 4 ++--
 .gitlab-ci/Dockerfile    | 1 +
 .gitlab-ci/run-docker.sh | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f7b81247d8..c5c681fffd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ stages:
     - subprojects/pango/
 
 fedora-x86_64:
-  image: registry.gitlab.gnome.org/gnome/gtk/master:v3
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v4
   stage: build
   script:
     - bash -x ./.gitlab-ci/test-docker.sh
@@ -99,7 +99,7 @@ flatpak-master:icon-browser:
   <<: *flatpak-master
 
 pages:
-  image: registry.gitlab.gnome.org/gnome/gtk/master:v3
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v4
   stage: deploy 
   script:
     - meson -Ddocumentation=true _build .
diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index a2866c5fac..8c32e8fa5b 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -11,6 +11,7 @@ RUN dnf -y install \
     ccache \
     colord-devel \
     cups-devel \
+    dejavu-sans-mono-fonts \
     desktop-file-utils \
     elfutils-libelf-devel \
     fribidi-devel \
diff --git a/.gitlab-ci/run-docker.sh b/.gitlab-ci/run-docker.sh
index 4b103b09a7..bcc8d7d076 100755
--- a/.gitlab-ci/run-docker.sh
+++ b/.gitlab-ci/run-docker.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-TAG="registry.gitlab.gnome.org/gnome/gtk/master:v3"
+TAG="registry.gitlab.gnome.org/gnome/gtk/master:v4"
 
 sudo docker build --build-arg HOST_USER_ID="$UID" --tag "${TAG}" \
     --file "Dockerfile" .