[gnome-builder/alatiera/ccache] CI: Lets try ccache again

[Jordan Petridis <jpetridis src gnome org>]

commit af73b5b9121b5dd8b90aa2b8b3b051e61292fdf5
Author: Jordan Petridis <jpetridis gnome org>
Date:   Mon Sep 17 12:55:43 2018 +0300

    CI: Lets try ccache again

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a4390c11b..ae6152c14 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,7 @@ flatpak:
         DBUS_ID: "org.gnome.Builder"
 
     script:
-        - flatpak-builder --stop-at=${FLATPAK_MODULE} app ${MANIFEST_PATH}
+        - flatpak-builder --force-clean --ccache --stop-at=${FLATPAK_MODULE} app ${MANIFEST_PATH}
         # Make sure to keep this in sync with the Flatpak manifest, all arguments
         # are passed except the config-args because we build it ourselves
         - flatpak build app meson --prefix=/app ${MESON_ARGS} _build
@@ -45,7 +45,7 @@ flatpak:
         paths:
             - .flatpak-builder/downloads/
             - .flatpak-builder/git/
-
+            - .flatpak-builder/ccache/
 review:
     stage: review
     dependencies: