feat: new backend pipeline

Author: andreishket

.github/workflows/backend.yml

@@ -1,4 +1,4 @@
-name: backend CI
+name: Backend CI
 
 on:
   push:
@@ -13,18 +13,18 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+      - name: Show files (structured)
+        run: find . -type f
 
-      - name: Show files
-        run: ls -R
+      - name: Ensure test script exists
+        run: |
+          if [ ! -f test_runners/persistence/dockerized.sh ]; then
+            echo "Error: test_runners/persistence/dockerized.sh not found!"
+            exit 1
+          fi
 
       - 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
-
-      - name: Show logs on failure
-        if: failure()
-        run: docker-compose -f test_runners/persistence/docker-compose.yml logs