ci: fix docker runner mounts for demo-app

.gitea/workflows/docker-deploy.yml

@@ -9,11 +9,6 @@ on:
 jobs:
   build-deploy:
     runs-on: docker-cli
-    container:
-      image: docker:28-cli
-      volumes:
-        - /var/run/docker.sock:/var/run/docker.sock
-        - /mnt/d/docker:/mnt/d/docker
     steps:
       - name: Build Docker image
         run: |