[gnome-build-meta/abderrahim/fix-deploy-41] .gitlab-ci.yml: pass the docker image to flat-manager child pipeline

[Abderrahim Kitouni <akitouni src gnome org>]

commit fe6a2361e9ade9c5c9c64e66785587870166435c
Author: Abderrahim Kitouni <akitouni gnome org>
Date:   Wed Dec 15 16:19:00 2021 +0100

    .gitlab-ci.yml: pass the docker image to flat-manager child pipeline
    
    This fixes 36c6f2378f9ae0568099c85e91a36c29c93dd484

 .gitlab-ci.yml              | 2 ++
 .gitlab-ci/flat-manager.yml | 1 +
 2 files changed, 3 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8b0842f6d..5a70e1321 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -199,6 +199,8 @@ generate-deploy-config:
       TARGETS: flatpak-runtimes.bst
       TARGETS_nightly: flatpak-platform-extensions.bst
       ENVIRONMENT_NAME: '$ENVIRONMENT_NAME'
+      DOCKER_REGISTRY: '$DOCKER_REGISTRY'
+      DOCKER_IMAGE_ID: '$DOCKER_IMAGE_ID'
 
     END
   - cat flatpak-variables.yml .gitlab-ci/flat-manager.yml > flatpak-deploy.yml
diff --git a/.gitlab-ci/flat-manager.yml b/.gitlab-ci/flat-manager.yml
index 24cc67636..28bccfb3d 100644
--- a/.gitlab-ci/flat-manager.yml
+++ b/.gitlab-ci/flat-manager.yml
@@ -7,6 +7,7 @@ stages:
 - finish
 
 default:
+  image: "${DOCKER_REGISTRY}/bst16:${DOCKER_IMAGE_ID}"
   before_script:
   # Ensure the log directory exists
   - mkdir -p logs