[bbb-greenlight] Use actual variables for authentication

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit ef73ea17e9132b368cd3b6422c783d58e79cbba1
Author: Bartłomiej Piotrowski <b bpiotrowski pl>
Date:   Mon Aug 3 13:24:46 2020 +0200

    Use actual variables for authentication

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dc0f4bd..27a6919 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ docker:
       events_logger = "file"
       END
 
-    - buildah login -u USER -p TOKEN registry.gitlab.gnome.org
+    - buildah login -u $CI_REGISTRY_USER -p $CI_REGISTRY_TOKEN registry.gitlab.gnome.org
     - buildah bud -t greenlight .
     - buildah tag greenlight registry.gitlab.gnome.org/infrastructure/bbb-greenlight:$COMMIT 
registry.gitlab.gnome.org/infrastructure/bbb-greenlight:latest
     - buildah push registry.gitlab.gnome.org/infrastructure/bbb-greenlight:$COMMIT 
registry.gitlab.gnome.org/infrastructure/bbb-greenlight:latest