[ci] Fix flatpak build

.github/workflows/ci.yml

@@ -25,15 +25,15 @@ jobs:
   flatpak:
     name: Flatpak
     runs-on: ubuntu-latest
-    container:
-      image: bilelmoussaoui/flatpak-github-actions:gnome-nightly
-      options: --privileged
+
     steps:
       - uses: actions/checkout@v3
-    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v6
+
+      - name: Build Flatpak
+        uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v6
         with:
           bundle: notify.flatpak
           manifest-path: build-aux/com.ranfdev.Notify.Devel.json
-        repository-name: "flathub"
+          repository-name: flathub
           run-tests: true
           cache-key: flatpak-builder-${{ github.sha }}