chore: fix workflow

Author: ModProg

.github/workflows/docker-publish.yml

@@ -31,6 +31,7 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+        submodules: recursive
 
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'