[polari/wip/ozinger: 8/18] Update .gitlab-ci.yml

[Florian Müllner <fmuellner src gnome org>]

commit 144090449b9c0749e0740ba4f2398e38e6ee8e2c
Author: DaeHyun Sung <sungdh86 gmail com>
Date:   Wed Mar 7 17:36:11 2018 +0000

    Update .gitlab-ci.yml

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5aee0bc..4022e51 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,6 +4,7 @@ stages:
  - build
 
 before_script:
+  - dnf clean packages
   - dnf install -y gcc meson redhat-rpm-config gettext itstool gtk3-devel
                    gjs-devel gobject-introspection-devel telepathy-glib-devel
                    libappstream-glib desktop-file-utils
@@ -13,3 +14,4 @@ build-polari:
   script:
     - meson _build .
     - ninja -C _build test install
+