try false?

.github/workflows/docker.yml

@@ -26,6 +26,7 @@ jobs:
         # https://stackoverflow.com/questions/65077036/how-to-checkout-submodule-in-github-action
         with:
           submodules: recursive
+          ssh-strict: false
       # Uses the `docker/login-action` action to log in to the Container registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
       - name: Log in to the Container registry
         uses: docker/login-action@v3