[gnome-sound-recorder] Gitlab CI: build flatpak nightlies

[Felipe Borges <felipeborges src gnome org>]

commit b6347b4db1045874791a2a36832df35c9fda74a1
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Fri Jan 11 10:37:14 2019 +0000

    Gitlab CI: build flatpak nightlies
    
    Per the DevOps with Flatpak initiative 
https://gitlab.gnome.org/GNOME/Initiatives/wikis/DevOps-with-Flatpak
    Fixes #41

 .gitlab-ci.yml | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..3f1a2d0
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,23 @@
+include: 'https://gitlab.gnome.org/GNOME/citemplates/raw/master/flatpak/flatpak_ci_initiative.yml'
+
+variables:
+    BUNDLE: "sound-recorder-dev.flatpak"
+
+flatpak:
+    image: 'registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master'
+    variables:
+        MANIFEST_PATH: "org.gnome.SoundRecorder.json"
+        FLATPAK_MODULE: "gnome-sound-recorder"
+        RUNTIME_REPO: "https://sdk.gnome.org/gnome-nightly.flatpakrepo";
+        APP_ID: "org.gnome.SoundRecorder"
+    extends: .flatpak
+
+review:
+    stage: deploy
+    dependencies:
+        - 'flatpak'
+    extends: '.review'
+
+stop_review:
+    stage: deploy
+    extends: '.stop_review'