fix: streamline recipe, update workflow, document including empty objects (#46)

* fix: streamline recipe, update workflow, document including empty objects

* feat: only run one build at a time #43

recipes/recipe.yml

@@ -33,18 +33,12 @@ modules:
     notify: true # Send notification after install/uninstall is finished (true/false)
     system:
       # If no repo information is specified, Flathub will be used by default
-      # repo-url: https://dl.flathub.org/repo/flathub.flatpakrepo
-      repo-name: flathub
-      repo-title: "Flathub (system-wide)" # Optional; this sets the remote's user-facing name in graphical frontends like GNOME Software
       install:
         - org.mozilla.firefox
         - org.gnome.Loupe
-        # - one.ablaze.floorp//lightning # This is an example of flatpak which has multiple branches in selection (flatpak//branch).
-      # Flatpak runtimes are not supported (like org.winehq.Wine//stable-23.08),
-      # only normal flatpak applications are (like Floorp Lightning web browser in this example).
-      # Installing different branches of the same Flatpak is not supported.
       remove:
         - org.gnome.eog
+    user: {} # Also add Flathub user repo, but no user packages
 
   - type: signing # this sets up the proper policy & signing files for signed images to work fully