[evince] gitlab-ci: Leave config.log available when build fails

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 005afadaae09d04b089ac8e15f32f04cc3f99766
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Thu May 24 21:06:20 2018 -0400

    gitlab-ci: Leave config.log available when build fails

 .gitlab-ci.yml | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 191d9691..c319be2a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,3 +8,9 @@ master:
     script:
         - ./autogen.sh --enable-debug --enable-nautilus
         - make
+
+    artifacts:
+        when: on_failure
+        paths:
+        - config.log
+        expire_in: 2 days