feat: new backend pipeline

Author: andreishket

.github/workflows/backend.yml

@@ -16,6 +16,12 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
 
+      - name: Show files
+        run: ls -R
+
+      - name: Make script executable
+        run: chmod +x test_runners/persistence/dockerized.sh
+
       - name: Run tests in Docker container
         run: sh test_runners/persistence/dockerized.sh