diff --git a/.gitea/workflows/test.yaml b/.gitea/workflows/test.yaml
index b529b9d..ac4df68 100644
--- a/.gitea/workflows/test.yaml
+++ b/.gitea/workflows/test.yaml
@@ -1,47 +1,50 @@
-name: Test Runner
-on: [push]
+name: Build and Push Image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
 
 jobs:
-  test-check:
+  build:
     runs-on: ubuntu-latest
     container:
-      image: ubuntu:latest
+      image: node:20-bookworm
 
     steps:
-      - name: Checkout Repository
+      - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Say Hello
-        run: echo "Testing connection..."
-
-      - name: Install Net Tools
-        run: |
-          apt-get update
-          apt-get install -y iputils-ping
-
       - name: Install Docker CLI
         run: |
-          apt-get update && apt-get install -y docker.io
+          apt-get update
+          apt-get install -y --no-install-recommends ca-certificates docker.io
+          rm -rf /var/lib/apt/lists/*
 
-      - name: Debug Network (Ping Test)
-        run: |
-          echo "正在嘗試 Ping docker (DinD service)..."
-          # 使用 service name "docker" 而不是 container_name "gitea_dind"
-          ping -c 3 docker
-      
-      - name: Test Docker Connection
-        run: |
-          echo "正在嘗試連線 Docker API..."
-          echo "DOCKER_HOST = $DOCKER_HOST"
-          docker ps
-          echo "成功！可以看到上面的容器列表了！"
+      - name: Verify Docker-in-Docker
+        run: docker info
 
-      - name: Build Test Image
+      - name: Log in to Gitea Registry
         run: |
-          docker build --progress=plain -t test-runner:ci .
+          echo "${{ secrets.REGISTRY_TOKEN }}" |
+            docker login git.karylab.com \
+              --username "${{ secrets.REGISTRY_USERNAME }}" \
+              --password-stdin
 
-      - name: Run Test Image
+      - name: Build and test image
         run: |
-          output="$(docker run --rm test-runner:ci)"
+          IMAGE="git.karylab.com/karylab_agents/test-runner"
+          docker build --progress=plain \
+            --tag "${IMAGE}:${{ gitea.sha }}" \
+            --tag "${IMAGE}:latest" \
+            .
+          output="$(docker run --rm "${IMAGE}:${{ gitea.sha }}")"
           echo "$output"
           test "$output" = "Gitea Runner Docker build succeeded."
+
+      - name: Push image
+        run: |
+          IMAGE="git.karylab.com/karylab_agents/test-runner"
+          docker push "${IMAGE}:${{ gitea.sha }}"
+          docker push "${IMAGE}:latest"