[gtranslator] CI: release building

[Daniel Garcia Moreno <danigm src gnome org>]

commit 7dd5786b50655633ac7acd95427136bff78d3688
Author: Daniel García Moreno <danigm wadobo com>
Date:   Mon Oct 29 13:17:44 2018 +0100

    CI: release building

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 89f5c9fe..1ad2075b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,7 @@ flatpak:
     - flatpak-builder --stop-at=${FLATPAK_MODULE} --force-clean app ${MANIFEST_PATH}
 
     # Build the flatpak repo
-    - flatpak-builder --run app ${MANIFEST_PATH} meson --prefix=/app _build
+    - flatpak-builder --run app ${MANIFEST_PATH} meson --buildtype=release --prefix=/app _build
     - flatpak-builder --run app ${MANIFEST_PATH} ninja -C _build install
 
     # Create a flatpak bundle
@@ -64,4 +64,4 @@ stop_review:
     action: stop
   except:
     - master@GNOME/gtranslator
-    - tags
\ No newline at end of file
+    - tags