diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index f9fa77f..f5e5091 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -5,6 +5,7 @@ on: [push]
 jobs:
   Build-Docker-Image:
     runs-on: ubuntu-latest
+    container: ghcr.io/catthehacker/ubuntu:act-latest
     steps:
       - name: Login to Docker Hub
         uses: docker/login-action@v3
@@ -12,10 +13,8 @@ jobs:
           registry: swaous.asuscomm.com
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-      - name: Build and push
-        uses: docker/build-push-action@v6
-        with:
-          push: true
-          tags: user/app:latest
+      - name: Build
+        run: |
+          docker build -t swaous.asuscomm.com/act-runner-test:${{ gitea.sha }} .
+          docker push swaous.asuscomm.com/act-runner-test:${{ gitea.sha }}
+          echo "pushed swaous.asuscomm.com/act-runner-test:${{ gitea.sha }}
diff --git a/Containerfile b/Containerfile
new file mode 100644
index 0000000..9fd5fbb
--- /dev/null
+++ b/Containerfile
@@ -0,0 +1,2 @@
+FROM alpine:latest
+CMD ["echo", "\"hello world\""]