[libsoup: 5/5] ci: Add glib2-doc to docker image

[Patrick Griffis <pgriffis src gnome org>]

commit c631894c242940c4e664de2505b4bb01267432c4
Author: Patrick Griffis <pgriffis igalia com>
Date:   Sun Sep 20 12:31:35 2020 -0700

    ci: Add glib2-doc to docker image

 .gitlab-ci/Dockerfile | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index da3f716c..0e6b93ee 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -6,6 +6,7 @@ RUN dnf update -y \
     && dnf install -y brotli-devel \
                       git \
                       gtk-doc \
+                      glib2-doc \
                       httpd \
                       lcov \
                       libpsl-devel \