[grilo-plugins/wip/hadess/fix-ci: 1/2] ci: Add missing gtk-doc build dependency

[Bastien Nocera <hadess src gnome org>]

commit 568d1b7b8ae9d46a66a0db3f307d513cb9da3321
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 12 00:10:47 2019 +0100

    ci: Add missing gtk-doc build dependency

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3e348f3..e903b0f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,6 +5,7 @@ variables:
                       libsoup-devel glib2-devel gtk3-devel
                       liboauth-devel totem-pl-parser-devel
                       meson redhat-rpm-config gcc gcc-c++ glibc-devel git vala
+                      gtk-doc
 
   DEPENDENCIES: sqlite-devel libgcrypt-devel itstool lua-devel
                 libsoup-devel gperf libarchive-devel json-glib-devel