submodules....

Signed-off-by: Maximilian Huber <gh@maxhbr.de>

.github/workflows/build_container_image.yml

@@ -17,12 +17,21 @@ jobs:
       - uses: actions/checkout@v4
       #   with:
       #     submodules: true
-      - name: non recursive submodule checkout
+      - name: submodule checkout
         run: |
-          mkdir ~/.ssh
+          ssh-keygen -t rsa -b 4096 -m PEM -f gh-actions-key -q -N ""
+          # Start the SSH agent and add the key
+          eval "$(ssh-agent -s)"
+          ssh-add gh-actions-key
+          # Ensure SSH does not ask for host verification
+          mkdir -p ~/.ssh
+          echo -e "Host github.com\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
           ssh-keyscan -t rsa gitlab.com >> ~/.ssh/known_hosts
           ssh-keyscan github.com >> ~/.ssh/known_hosts
-          git submodule update --init
+          
+          git submodule sync --recursive
+          git submodule update --init --recursive
+          # git submodule update --init
 
       - name: 'Login to GitHub Container Registry'
         uses: docker/login-action@v1