fix: checkout code on building

.github/workflows/build-docker-image.yml

@@ -27,8 +27,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Checkout
+        uses: actions/checkout@v3
 
       - name: Docker meta
         id: meta