diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 077ed68..01c9646 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -14,6 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - uses: actions/checkout@master
     - name: Publish Docker Image
       # You may pin to the exact commit or the version.
       # uses: elgohr/Publish-Docker-Github-Action@191af57e15535d28b83589e3b5f0c31e76aa8733