ci: Install some missing packages in fedora docker image

.gitlab-ci.yml

@@ -98,9 +98,6 @@ installed-tests:
   extends: .only-default
   image: $FEDORA_IMAGE
   stage: build
-  before_script:
-    # FIXME move to docker image
-    - sudo dnf install -y gnome-desktop-testing python3-dbusmock xdg-desktop-portal
   script:
     # FIXME Install xdg-desktop-portal build deps before compiling glib,
     # so it doesn't overwrite our own glib build

.gitlab-ci/fedora.Dockerfile

@@ -43,12 +43,14 @@ RUN dnf -y install \
     ncurses-compat-libs \
     ninja-build \
     pcre-devel \
+    python3-dbusmock \
     python3-wheel \
     shared-mime-info \
     systemtap-sdt-devel \
     unzip \
     valgrind \
     wget \
+    xdg-desktop-portal \
     xz \
     zlib-devel \
  && dnf clean all