Add a simple smoke test launching all scripts with --help

.github/workflows/ci-test.yml

@@ -42,6 +42,36 @@ jobs:
       if: always()
       run: docker-compose -f dist/ci/docker-compose.yml down
 
+  smoke-test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        image:
+          - registry.opensuse.org/opensuse/tumbleweed:latest
+          - registry.opensuse.org/opensuse/leap:15.5
+
+    container: ${{ matrix.image }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: add the openSUSE:Tools repository for Tumbleweed
+        run: zypper -n ar https://download.opensuse.org/repositories/openSUSE:/Tools/openSUSE_Tumbleweed/openSUSE:Tools.repo
+        if: ${{ contains(matrix.image, 'tumbleweed') }}
+      - name: add the openSUSE:Tools repository for Leap
+        run: zypper -n ar https://download.opensuse.org/repositories/openSUSE:/Tools/15.5/openSUSE:Tools.repo
+        if: ${{ contains(matrix.image, 'leap') }}
+
+      - name: install the dependencies of openSUSE-release-tool
+        run: |
+          zypper -n --gpg-auto-import-keys refresh
+          zypper source-install openSUSE-release-tools
+
+      - name: run a simple smoke test whether --help actually works
+        run: |
+          for f in $(find . -maxdepth 1 -type f -executable -print); do
+              eval "$f --help"
+          done
+
   linters:
     runs-on: ubuntu-latest