[gnome-runtime-images] gnome-3-34: use flathub-beta for now till the official release

[Jordan Petridis <jpetridis src gnome org>]

commit 35ba9e1ffd3bdb7cc8854a1df9217f5aeec46c02
Author: Jordan Petridis <jpetridis gnome org>
Date:   Tue Sep 10 15:22:48 2019 +0300

    gnome-3-34: use flathub-beta for now till the official release

 gnome-3-34/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-3-34/Dockerfile b/gnome-3-34/Dockerfile
index 793e0cc..35567b4 100644
--- a/gnome-3-34/Dockerfile
+++ b/gnome-3-34/Dockerfile
@@ -1,3 +1,3 @@
 FROM registry.gitlab.gnome.org/gnome/gnome-runtime-images/base
 
-RUN flatpak install -y flathub org.gnome.Sdk//3.34 org.gnome.Platform//3.34
+RUN flatpak install -y flathub-beta org.gnome.Sdk//3.34 org.gnome.Platform//3.34