diff --git a/.github/workflows/ci-docker-publish.yml b/.github/workflows/ci-docker-publish.yml
index ad70e1e57..56456065f 100644
--- a/.github/workflows/ci-docker-publish.yml
+++ b/.github/workflows/ci-docker-publish.yml
@@ -20,6 +20,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: recursive
 
       # Setup gcloud CLI
       - uses: google-github-actions/setup-gcloud@94337306dda8180d967a56932ceb4ddcf01edae7