Maintenance update for image building

.github/workflows/build-sim_telarray.yml

@@ -18,9 +18,32 @@ env:
   IMAGE_NAME: ${{ github.repository }}
   CLOUD_URL: "https://syncandshare.desy.de/index.php/s/"
 
+permissions:
+  contents: read
+
 jobs:
+  download-auxiliary-files:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: download-auxiliary-files
+        run: |
+          curl -L --fail \
+            --retry 5 --retry-delay 10 --retry-connrefused \
+            --connect-timeout 30 \
+           "${{ env.CLOUD_URL }}/${{ secrets.CLOUD_GSL }}/download" \
+           -o gsl.tar.gz
+      - name: upload-auxiliary-files
+        uses: actions/upload-artifact@v7
+        with:
+          name: upload-auxiliary-files
+          path: |
+            gsl.tar.gz
+          retention-days: 1
+
   build-sim_telarray:
     runs-on: ubuntu-latest
+    needs: [download-auxiliary-files]
     permissions:
       contents: read
       packages: write
@@ -36,6 +59,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v6
 
+      - name: Download auxiliary files
+        uses: actions/download-artifact@v8
+        with:
+          name: upload-auxiliary-files
+          path: .
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4