diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 6a9d7f0..39894b8 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -29,6 +29,21 @@ jobs:
             exit 1
           fi
           /usr/bin/flock --version
+      - name: Verify persistent cache
+        shell: bash
+        run: |
+          set -Eeuo pipefail
+
+          echo "=== Cache Mount ==="
+          findmnt -T /vuln-cache || true
+
+          echo "=== Schreibtest ==="
+          mkdir -p /vuln-cache/vuln-builder
+          echo "CACHE_TEST_OK" > /vuln-cache/vuln-builder/test.txt
+
+          echo "=== Inhalt ==="
+          ls -lah /vuln-cache/vuln-builder    
+          
       - name: Bootstrap and build
         shell: bash
         run: |