diff --git a/.github/workflows/cd_docker.yml b/.github/workflows/cd_docker.yml
index 9cf92ed..ec94b70 100644
--- a/.github/workflows/cd_docker.yml
+++ b/.github/workflows/cd_docker.yml
@@ -13,6 +13,8 @@ jobs:
     name: Push Docker image to Docker Hub
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout
+        uses: actions/checkout@v2
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx