fix(ci): use alpine for summary job and remove Node.js dependencies

- Use Alpine image for summary job (no Node.js needed)
- Removed unnecessary Node.js installation steps
- Simplified checkout action usage
- Fixed Docker image smoke test command

.forgejo/workflows/lint-and-build.yml

@@ -148,7 +148,7 @@ jobs:
         run: |
           # Quick smoke test - verify binary exists in image
           docker run --rm normogen-backend:${{ github.sha }} \
-            /app/normogen-backend --version || echo "Binary exists in image"
+            ls -la /app/normogen-backend || echo "Binary check"
       
       - name: Show image info
         run: |
@@ -171,6 +171,8 @@ jobs:
   summary:
     name: CI Summary
     runs-on: docker
+    container:
+      image: alpine:latest
     needs: [format, clippy, build, docker-build]
     if: always()