[GitHub Actions] Flatpak: Check staged screenshots

.ci/flatpak/build.sh

@@ -62,6 +62,19 @@ test -f "${WZ_FLATPAK_BUILD_PATH}/app-info/icons/flatpak/128x128/${WZ_FLATPAK_AP
 test -f "${WZ_FLATPAK_BUILD_PATH}/app-info/xmls/${WZ_FLATPAK_APPID}.xml.gz" || { echo "Missing ${WZ_FLATPAK_APPID}.xml.gz in app-info" ; exit 1; }
 echo "::endgroup::"
 
+echo "::group::Check screenshots"
+if [ ! -d "${WZ_FLATPAK_BUILD_DIR}/screenshots" ]; then
+  echo "::notice ::Screenshots not mirrored by flatpak-builder?"
+else
+  echo "Found screenshots:"
+  find "${WZ_FLATPAK_BUILD_DIR}/screenshots" -type f
+fi
+echo "::endgroup::"
+
 echo "::group::Commit screenshots to the OSTree repository"
-ostree commit --repo=${WZ_FLATPAK_LOCAL_REPO_NAME} --canonical-permissions --branch=screenshots/${WZ_FLATPAK_TARGET_ARCH} "${WZ_FLATPAK_BUILD_DIR}/screenshots"
+if [ -d "${WZ_FLATPAK_BUILD_DIR}/screenshots" ]; then
+  ostree commit --repo=${WZ_FLATPAK_LOCAL_REPO_NAME} --canonical-permissions --branch=screenshots/${WZ_FLATPAK_TARGET_ARCH} "${WZ_FLATPAK_BUILD_DIR}/screenshots"
+else
+  echo "::warning ::Screenshots not added to OSTree repository"
+fi
 echo "::endgroup::"

.github/workflows/CI_flatpak.yml

@@ -226,6 +226,11 @@ jobs:
         . src/.ci/flatpak/build.sh
         echo "WZ_FLATPAK_LOCAL_REPO_NAME=${WZ_FLATPAK_LOCAL_REPO_NAME}"
         echo "WZ_FLATPAK_LOCAL_REPO_NAME=${WZ_FLATPAK_LOCAL_REPO_NAME}" >> $GITHUB_OUTPUT
+    - name: Output generated files listing
+      shell: bash
+      working-directory: flatpak_app/files
+      run: |
+        find . -type f
     - name: Lint Flatpak
       continue-on-error: true
       env:
@@ -245,11 +250,6 @@ jobs:
       with:
         name: 'warzone2100_linux_flatpak_${{ matrix.arch }}'
         path: ${{ steps.settings.outputs.WZ_FLATPAK_BUNDLE }}
-    - name: Output generated files listing
-      shell: bash
-      working-directory: flatpak_app/files
-      run: |
-        find . -type f
     - name: Upload debug info
       uses: actions/upload-artifact@v3
       with: