diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index 2d335c7..35daf32 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -40,7 +40,9 @@ jobs:
       - name: 安装 Maven
         run: |
           echo "安装 Maven..."
-          sudo apt update
+          # 修复GPG签名错误问题
+          sudo apt-get clean
+          sudo apt-get update --allow-releaseinfo-change
           sudo apt install -y maven
           echo "Maven 版本:"
           mvn --version
@@ -90,14 +92,7 @@ jobs:
           docker stop light-delivery-container 2>/dev/null || echo "没有运行中的容器"
           docker rm light-delivery-container 2>/dev/null || echo "没有可删除的容器"
 
-      - name: 备份当前镜像（可选）
-        run: |
-          # 为当前运行中的镜像创建备份标签
-          if docker images light-delivery-app:latest --quiet | grep -q .; then
-            BACKUP_TAG="backup-$(date +%Y%m%d-%H%M%S)"
-            docker tag light-delivery-app:latest light-delivery-app:$BACKUP_TAG
-            echo "已创建备份: light-delivery-app:$BACKUP_TAG"
-          fi
+      # 已移除备份镜像逻辑，节省存储空间
 
       - name: 运行新容器
         run: |
@@ -140,15 +135,6 @@ jobs:
 
       - name: 清理资源
         run: |
-          # 清理旧的备份镜像（保留最近5个）
-          echo "清理旧的备份镜像..."
-          docker images light-delivery-app --filter "reference=light-delivery-app:backup-*" \
-            --format "{{.Tag}}\t{{.CreatedAt}}" | \
-            sort -k2 -r | \
-            tail -n +6 | \
-            awk '{print $1}' | \
-            xargs -r -I {} docker rmi light-delivery-app:{} || echo "无需清理"
-          
           # 清理无用镜像和容器
           docker system prune -f