[fractal/fractal-next-build-nightly] CI: Publish fractal-next to gnome nightly

[Daniel Garcia Moreno <danigm src gnome org>]

commit e813a95a1c46ad2a955b98998d75a3c96beb0004
Author: Daniel García Moreno <dani danigm net>
Date:   Thu Feb 3 09:44:14 2022 +0100

    CI: Publish fractal-next to gnome nightly

 .gitlab-ci.yml | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ad3226226..53793c479 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -82,3 +82,28 @@ pages:
   only:
     refs:
       - fractal-next
+
+publish_nightly:
+  image: 'registry.gitlab.gnome.org/gnome/gnome-runtime-images/flat-manager-client'
+  dependencies: ['flatpak']
+  needs: ['flatpak']
+  stage: 'deploy'
+  timeout: '100m'
+  script:
+    - tar xf repo.tar
+    - flatpak build-update-repo --generate-static-deltas repo/
+    - BUILD_ID=$(flat-manager-client create ${FLAT_MANAGER_URL} ${FLATPAK_REPO})
+    - flat-manager-client push --commit --publish --wait ${BUILD_ID} repo/ || result=$?
+    - flat-manager-client purge ${BUILD_ID}
+    - exit $result
+  variables:
+    FLAT_MANAGER_URL: https://flat-manager.gnome.org/
+    FLATPAK_REPO: nightly
+  only:
+    refs:
+      - 'master'
+      - 'main'
+      - 'mainline'
+      - $CI_DEFAULT_BRANCH
+    variables:
+      - $REPO_TOKEN