[discourse-web/flathub] Default to stable branch

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit f4214a4d46a726317f72b3171743fa9521ae6269
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed Oct 7 13:23:20 2020 +0200

    Default to stable branch

 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/Dockerfile b/Dockerfile
index 205c75a..34e7789 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,7 +27,7 @@ RUN \
 
 # Install modified version of Discourse
 # we can override it with --build_arg
-ARG DISCOURSE_VERS='tests-passed'
+ARG DISCOURSE_VERS='stable'
 ENV DISCOURSE_RELEASE=$DISCOURSE_VERS RAILS_ROOT=/discourse HOME=/discourse
 
 # Remove upstream discourse installation, so we will pre-cook ours.