[nautilus: 1/3] flatpak: switch to using gnome-nightly

[Carlos Soriano <csoriano src gnome org>]

commit 153ee62edbdb05ec246dc0ece7cb381763c33ce8
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Mon Mar 19 09:51:30 2018 +0200

    flatpak: switch to using gnome-nightly

 .gitlab-ci.yml                                 | 2 +-
 build-aux/flatpak/org.gnome.NautilusDevel.json | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a4e3d6629..b2b0337ab 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,7 +12,7 @@ stages:
     - ninja test
 
 flatpak:master:
-    image: flatpak/flatpak-builder:gnome-3-28
+    image: registry.gitlab.com/alatiera/gnome-nightly-oci/gnome-master:latest
     stage: test
     script:
     - flatpak-builder --stop-at=nautilus app build-aux/flatpak/org.gnome.NautilusDevel.json
diff --git a/build-aux/flatpak/org.gnome.NautilusDevel.json b/build-aux/flatpak/org.gnome.NautilusDevel.json
index a53f619e6..b0424ec18 100644
--- a/build-aux/flatpak/org.gnome.NautilusDevel.json
+++ b/build-aux/flatpak/org.gnome.NautilusDevel.json
@@ -1,7 +1,7 @@
 {
     "app-id": "org.gnome.NautilusDevel",
     "runtime": "org.gnome.Platform",
-    "runtime-version": "3.28",
+    "runtime-version": "master",
     "sdk": "org.gnome.Sdk",
     "command": "nautilus",
     "tags": ["devel", "development", "nightly"],