feat: decouple frontend and backend deployment workflows with Docker

.gitea/workflows/backend-deploy.yml

@@ -0,0 +1,56 @@
+name: Backend Deploy (Go + Docker)
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'server/**'
+
+jobs:
+  deploy:
+    runs-on: arm
+    container:
+      image: catthehacker/ubuntu:act-latest
+    steps:
+      - name: 获取代码
+        uses: actions/checkout@v4
+      
+      - name: 安装 Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          
+      - name: 编译后端可执行文件
+        run: |
+          cd server
+          env GOOS=linux GOARCH=arm64 go build -o server_bin ./cmd/server
+      
+      - name: 准备部署文件
+        run: |
+          mkdir -p deploy
+          cp server/server_bin deploy/
+          cp server/Dockerfile deploy/
+          cp server/docker-compose.yml deploy/
+
+      - name: 部署文件到服务器
+        uses: up9cloud/action-rsync@master
+        env:
+          USER: root
+          HOST: 144.24.60.0
+          KEY: ${{secrets.USAARMLOGIN_SSH_KEY}}
+          ARGS: -avz --delete 
+          SSH_ARGS: "-p 22 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
+          SOURCE: ./deploy/
+          TARGET: /var/admin/InsightReply/server/
+          VERBOSE: true
+
+      - name: 重启服务 (Docker Compose)
+        uses: appleboy/ssh-action@v1.0.3
+        with:
+          host: 144.24.60.0
+          username: root
+          key: ${{secrets.USAARMLOGIN_SSH_KEY}}
+          script: |
+            cd /var/admin/InsightReply/server
+            # 停止并重新构建启动容器 (利用刚同步过来的新 server_bin 和 Dockerfile)
+            docker-compose up -d --build