[gnome-runtime-images] Update registry links.

[Jordan Petridis <jpetridis src gnome org>]

commit 752026acea51c6cf18cb7406f3c8bb5cadbd6fae
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Tue May 22 17:10:48 2018 +0300

    Update registry links.

 gnome-3-26/Dockerfile   | 2 +-
 gnome-3-28/Dockerfile   | 2 +-
 gnome-master/Dockerfile | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gnome-3-26/Dockerfile b/gnome-3-26/Dockerfile
index 458bb0a..6e13827 100644
--- a/gnome-3-26/Dockerfile
+++ b/gnome-3-26/Dockerfile
@@ -1,3 +1,3 @@
-FROM registry.gitlab.gnome.org/alatiera/gnome-runtime-images/base
+FROM registry.gitlab.gnome.org/gnome/gnome-runtime-images/base
 
 RUN flatpak install gnome org.gnome.Sdk//3.26 org.gnome.Platform//3.26
diff --git a/gnome-3-28/Dockerfile b/gnome-3-28/Dockerfile
index 3281edb..596b73d 100644
--- a/gnome-3-28/Dockerfile
+++ b/gnome-3-28/Dockerfile
@@ -1,3 +1,3 @@
-FROM registry.gitlab.gnome.org/alatiera/gnome-runtime-images/base
+FROM registry.gitlab.gnome.org/gnome/gnome-runtime-images/base
 
 RUN flatpak install gnome org.gnome.Sdk//3.28 org.gnome.Platform//3.28
diff --git a/gnome-master/Dockerfile b/gnome-master/Dockerfile
index 55a4209..86b20f7 100644
--- a/gnome-master/Dockerfile
+++ b/gnome-master/Dockerfile
@@ -1,3 +1,3 @@
-FROM registry.gitlab.gnome.org/alatiera/gnome-runtime-images/base
+FROM registry.gitlab.gnome.org/gnome/gnome-runtime-images/base
 
 RUN flatpak install gnome-nightly org.gnome.Sdk org.gnome.Platform