diff --git a/系统优化 b/系统优化
new file mode 100644
index 0000000..a4043db
--- /dev/null
+++ b/系统优化
@@ -0,0 +1,516 @@
+#!/bin/bash
+
+# Ubuntu/Debian/CentOS/RHEL系统优化与Docker准备脚本
+# 精简版 - 不备份文件，适合小存储空间VPS
+
+# 颜色定义
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+PURPLE='\033[0;35m'
+CYAN='\033[0;36m'
+NC='\033[0m'
+
+# 日志文件
+LOG_FILE="/tmp/system_optimization.log"
+
+# 错误处理函数
+handle_error() {
+    echo -e "${RED}❌ 错误: $1${NC}"
+    echo "详细日志请查看: $LOG_FILE"
+    exit 1
+}
+
+# 日志记录函数
+log() {
+    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
+}
+
+# 检查命令是否存在
+check_command() {
+    if ! command -v "$1" &> /dev/null; then
+        return 1
+    fi
+    return 0
+}
+
+# 检测系统类型
+detect_os() {
+    echo -e "${BLUE}🔍 检测操作系统...${NC}"
+    
+    if [ -f /etc/os-release ]; then
+        . /etc/os-release
+        OS_NAME=$ID
+        OS_VERSION=$VERSION_ID
+        OS_PRETTY_NAME=$PRETTY_NAME
+        
+        echo -e "${GREEN}✅ 操作系统: $OS_PRETTY_NAME${NC}"
+        echo -e "${GREEN}✅ 版本: $OS_VERSION${NC}"
+        
+        case $OS_NAME in
+            ubuntu|debian)
+                OS_TYPE="debian"
+                PM="apt-get"
+                UPDATE_CMD="apt-get update"
+                UPGRADE_CMD="apt-get upgrade -y"
+                INSTALL_CMD="apt-get install -y"
+                AUTOREMOVE_CMD="apt-get autoremove -y"
+                AUTOCLEAN_CMD="apt-get autoclean -y"
+                ;;
+            centos|rhel|fedora|rocky|almalinux)
+                OS_TYPE="rhel"
+                if check_command dnf; then
+                    PM="dnf"
+                    UPDATE_CMD="dnf update -y"
+                    INSTALL_CMD="dnf install -y"
+                else
+                    PM="yum"
+                    UPDATE_CMD="yum update -y"
+                    INSTALL_CMD="yum install -y"
+                fi
+                AUTOREMOVE_CMD="$PM autoremove -y"
+                AUTOCLEAN_CMD="$PM clean all"
+                ;;
+            *)
+                handle_error "不支持的操作系统: $OS_NAME"
+                ;;
+        esac
+    else
+        handle_error "无法检测操作系统"
+    fi
+}
+
+# 检查系统架构
+check_architecture() {
+    echo -e "${BLUE}🔍 检查系统架构...${NC}"
+    ARCH=$(uname -m)
+    case $ARCH in
+        x86_64)
+            echo -e "${GREEN}✅ 系统架构: AMD64${NC}"
+            ;;
+        aarch64)
+            echo -e "${GREEN}✅ 系统架构: ARM64${NC}"
+            ;;
+        *)
+            echo -e "${YELLOW}⚠️  检测到非常见架构: $ARCH${NC}"
+            ;;
+    esac
+}
+
+# 清理系统缓存和旧包
+clean_system() {
+    echo -e "${BLUE}🧹 清理系统缓存和旧包...${NC}"
+    
+    if [ "$OS_TYPE" = "debian" ]; then
+        # 清理apt缓存
+        apt-get clean >> "$LOG_FILE" 2>&1 || echo -e "${YELLOW}⚠️  apt清理缓存失败${NC}"
+        apt-get autoremove -y >> "$LOG_FILE" 2>&1 || echo -e "${YELLOW}⚠️  apt自动移除失败${NC}"
+        
+        # 清理旧内核（仅保留最新1个以节省空间）
+        if check_command dpkg; then
+            OLD_KERNELS=$(dpkg -l | grep -E "linux-image-[0-9]" | grep -v $(uname -r | sed 's/-generic//') | awk '{print $2}')
+            if [ -n "$OLD_KERNELS" ]; then
+                echo -e "${BLUE}移除旧内核: $OLD_KERNELS${NC}"
+                apt-get remove -y $OLD_KERNELS >> "$LOG_FILE" 2>&1 || true
+            fi
+        fi
+    elif [ "$OS_TYPE" = "rhel" ]; then
+        # 清理yum/dnf缓存
+        $PM clean all >> "$LOG_FILE" 2>&1 || echo -e "${YELLOW}⚠️  $PM清理缓存失败${NC}"
+        
+        # 清理旧内核（仅保留最新1个）
+        if [ "$PM" = "yum" ]; then
+            package-cleanup --oldkernels --count=1 -y >> "$LOG_FILE" 2>&1 || true
+        elif [ "$PM" = "dnf" ]; then
+            dnf remove --oldinstallonly --setopt installonly_limit=1 -y >> "$LOG_FILE" 2>&1 || true
+        fi
+    fi
+    
+    # 清理临时文件（不清理太多避免影响运行）
+    rm -rf /tmp/*.deb /tmp/*.rpm /var/tmp/*.deb /var/tmp/*.rpm >> "$LOG_FILE" 2>&1 || true
+    
+    # 清理日志文件（保留最近7天）
+    find /var/log -name "*.log" -type f -mtime +7 -delete 2>/dev/null || true
+    find /var/log -name "*.gz" -type f -delete 2>/dev/null || true
+    
+    echo -e "${GREEN}✅ 系统清理完成${NC}"
+}
+
+# 更新系统包管理器
+update_package_manager() {
+    echo -e "${BLUE}🔄 更新包管理器...${NC}"
+    
+    if [ "$OS_TYPE" = "debian" ]; then
+        # 更新apt源
+        if ! $UPDATE_CMD >> "$LOG_FILE" 2>&1; then
+            echo -e "${YELLOW}⚠️  包管理器更新失败，尝试修复...${NC}"
+            
+            # 修复可能的损坏
+            dpkg --configure -a >> "$LOG_FILE" 2>&1 || true
+            apt-get install -f -y >> "$LOG_FILE" 2>&1 || true
+        fi
+    elif [ "$OS_TYPE" = "rhel" ]; then
+        if ! $UPDATE_CMD >> "$LOG_FILE" 2>&1; then
+            echo -e "${YELLOW}⚠️  包管理器更新失败，尝试修复...${NC}"
+            
+            # 修复可能的损坏
+            rpm --rebuilddb >> "$LOG_FILE" 2>&1 || true
+            $PM clean all >> "$LOG_FILE" 2>&1 || true
+        fi
+    fi
+    
+    echo -e "${GREEN}✅ 包管理器更新完成${NC}"
+}
+
+# 安装基础依赖（精简版）
+install_basic_dependencies() {
+    echo -e "${BLUE}📦 安装基础依赖包...${NC}"
+    
+    local base_packages=()
+    
+    if [ "$OS_TYPE" = "debian" ]; then
+        base_packages=(
+            "curl" "wget" "gnupg" "lsb-release" "apt-transport-https" 
+            "ca-certificates" "software-properties-common"
+            "net-tools" "dnsutils" "iputils-ping" "sudo" "bc"
+        )
+    elif [ "$OS_TYPE" = "rhel" ]; then
+        base_packages=(
+            "curl" "wget" "gnupg" "redhat-lsb-core" "yum-utils" "epel-release"
+            "ca-certificates" "device-mapper-persistent-data" "lvm2"
+            "net-tools" "bind-utils" "iputils" "sudo" "bc"
+        )
+    fi
+    
+    for package in "${base_packages[@]}"; do
+        echo -e "${BLUE}安装 $package...${NC}"
+        if ! $INSTALL_CMD "$package" >> "$LOG_FILE" 2>&1; then
+            echo -e "${YELLOW}⚠️  $package 安装失败，跳过...${NC}"
+        fi
+    done
+    
+    echo -e "${GREEN}✅ 基础依赖安装完成${NC}"
+}
+
+# 配置系统优化参数
+configure_system_optimization() {
+    echo -e "${BLUE}⚙️  配置系统优化参数...${NC}"
+    
+    # 优化内核参数 - 直接修改，不备份
+    if ! grep -q "系统优化配置" /etc/sysctl.conf; then
+        cat >> /etc/sysctl.conf << EOF
+
+# 系统优化配置 - 添加于 $(date)
+# 网络优化
+net.core.rmem_max = 16777216
+net.core.wmem_max = 16777216
+net.ipv4.tcp_rmem = 4096 87380 16777216
+net.ipv4.tcp_wmem = 4096 16384 16777216
+net.ipv4.tcp_max_syn_backlog = 8192
+net.ipv4.tcp_tw_reuse = 1
+
+# 内存优化
+vm.swappiness = 10
+vm.dirty_ratio = 15
+vm.dirty_background_ratio = 5
+
+# 文件系统优化
+fs.file-max = 65536
+EOF
+    fi
+    
+    # 应用配置
+    sysctl -p >> "$LOG_FILE" 2>&1 || echo -e "${YELLOW}⚠️  sysctl配置应用失败${NC}"
+    
+    # 配置文件描述符限制
+    if ! grep -q "文件描述符限制" /etc/security/limits.conf; then
+        cat >> /etc/security/limits.conf << EOF
+
+# 文件描述符限制 - 添加于 $(date)
+* soft nofile 65536
+* hard nofile 65536
+root soft nofile 65536
+root hard nofile 65536
+EOF
+    fi
+    
+    echo -e "${GREEN}✅ 系统优化配置完成${NC}"
+}
+
+# 配置DNS优化
+configure_dns() {
+    echo -e "${BLUE}🌐 配置DNS优化...${NC}"
+    
+    # 直接配置，不备份
+    cat > /etc/resolv.conf << EOF
+# DNS配置 - 优化于 $(date)
+nameserver 223.5.5.5
+nameserver 119.29.29.29
+nameserver 8.8.8.8
+nameserver 1.1.1.1
+options timeout:2 attempts:3 rotate
+EOF
+    
+    # 防止NetworkManager覆盖配置
+    if [ -f /etc/NetworkManager/NetworkManager.conf ]; then
+        sed -i 's/^dns=.*/dns=none/' /etc/NetworkManager/NetworkManager.conf 2>/dev/null || true
+    fi
+    
+    echo -e "${GREEN}✅ DNS优化配置完成${NC}"
+}
+
+# 配置Docker安装环境
+configure_docker_environment() {
+    echo -e "${BLUE}🐳 配置Docker安装环境...${NC}"
+    
+    if [ "$OS_TYPE" = "debian" ]; then
+        # 添加Docker官方GPG密钥
+        curl -fsSL https://download.docker.com/linux/$OS_NAME/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg >> "$LOG_FILE" 2>&1 || {
+            echo -e "${YELLOW}⚠️  Docker GPG密钥添加失败，使用备用方案${NC}"
+            curl -fsSL https://download.docker.com/linux/$OS_NAME/gpg | apt-key add - >> "$LOG_FILE" 2>&1 || true
+        }
+        
+        # 添加Docker仓库
+        echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/$OS_NAME $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
+        
+        # 更新包列表
+        $UPDATE_CMD >> "$LOG_FILE" 2>&1 || echo -e "${YELLOW}⚠️  更新包列表失败${NC}"
+        
+    elif [ "$OS_TYPE" = "rhel" ]; then
+        # 添加Docker仓库
+        $INSTALL_CMD yum-utils >> "$LOG_FILE" 2>&1 || true
+        yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo >> "$LOG_FILE" 2>&1 || {
+            echo -e "${YELLOW}⚠️  Docker仓库添加失败，使用官方仓库${NC}"
+        }
+        
+        # 更新包列表
+        $UPDATE_CMD >> "$LOG_FILE" 2>&1 || true
+    fi
+    
+    echo -e "${GREEN}✅ Docker环境配置完成${NC}"
+}
+
+# 安装Docker
+install_docker() {
+    echo -e "${BLUE}🐳 安装Docker...${NC}"
+    
+    # 检查是否已安装Docker
+    if check_command docker; then
+        echo -e "${YELLOW}⚠️  Docker已安装，跳过安装${NC}"
+        return 0
+    fi
+    
+    if [ "$OS_TYPE" = "debian" ]; then
+        $INSTALL_CMD docker-ce docker-ce-cli containerd.io docker-compose-plugin >> "$LOG_FILE" 2>&1 || {
+            echo -e "${YELLOW}⚠️  Docker安装失败，尝试替代方案${NC}"
+            # 尝试安装docker.io
+            $INSTALL_CMD docker.io containerd runc >> "$LOG_FILE" 2>&1 || {
+                echo -e "${RED}❌ Docker安装完全失败${NC}"
+                return 1
+            }
+        }
+    elif [ "$OS_TYPE" = "rhel" ]; then
+        $INSTALL_CMD docker-ce docker-ce-cli containerd.io docker-compose-plugin >> "$LOG_FILE" 2>&1 || {
+            echo -e "${YELLOW}⚠️  Docker安装失败，尝试替代方案${NC}"
+            $INSTALL_CMD docker >> "$LOG_FILE" 2>&1 || {
+                echo -e "${RED}❌ Docker安装完全失败${NC}"
+                return 1
+            }
+        }
+    fi
+    
+    # 启动Docker服务
+    systemctl enable docker >> "$LOG_FILE" 2>&1 || true
+    systemctl start docker >> "$LOG_FILE" 2>&1 || true
+    
+    # 验证安装
+    if docker --version >> "$LOG_FILE" 2>&1; then
+        echo -e "${GREEN}✅ Docker安装成功: $(docker --version)${NC}"
+        
+        # 配置用户组
+        usermod -aG docker $USER 2>/dev/null || true
+        echo -e "${GREEN}✅ 已将当前用户添加到docker组${NC}"
+    else
+        echo -e "${RED}❌ Docker安装验证失败${NC}"
+        return 1
+    fi
+}
+
+# 安装Docker Compose
+install_docker_compose() {
+    echo -e "${BLUE}🐳 安装Docker Compose...${NC}"
+    
+    # 检查是否已安装
+    if check_command docker-compose; then
+        echo -e "${YELLOW}⚠️  Docker Compose已安装，跳过${NC}"
+        return 0
+    fi
+    
+    # 安装最新版本
+    COMPOSE_VERSION=$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+    
+    if [ -z "$COMPOSE_VERSION" ]; then
+        COMPOSE_VERSION="v2.24.0"  # 备用版本
+    fi
+    
+    curl -L "https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose >> "$LOG_FILE" 2>&1
+    
+    if [ $? -eq 0 ]; then
+        chmod +x /usr/local/bin/docker-compose
+        ln -sf /usr/local/bin/docker-compose /usr/bin/docker-compose 2>/dev/null || true
+        
+        echo -e "${GREEN}✅ Docker Compose安装成功: ${COMPOSE_VERSION}${NC}"
+    else
+        echo -e "${YELLOW}⚠️  Docker Compose安装失败，跳过${NC}"
+    fi
+}
+
+# 验证安装结果
+verify_installation() {
+    echo -e "${BLUE}🔍 验证安装结果...${NC}"
+    
+    echo -e "${CYAN}系统信息:${NC}"
+    echo -e "  OS: $OS_PRETTY_NAME"
+    echo -e "  内核: $(uname -r)"
+    echo -e "  架构: $(uname -m)"
+    
+    echo -e "${CYAN}服务状态:${NC}"
+    if systemctl is-active docker >/dev/null 2>&1; then
+        echo -e "  Docker: ${GREEN}运行中${NC}"
+    else
+        echo -e "  Docker: ${RED}未运行${NC}"
+    fi
+    
+    echo -e "${CYAN}版本信息:${NC}"
+    if check_command docker; then
+        echo -e "  Docker: $(docker --version 2>/dev/null | cut -d' ' -f3 | tr -d ',')"
+    else
+        echo -e "  Docker: ${RED}未安装${NC}"
+    fi
+    
+    if check_command docker-compose; then
+        echo -e "  Docker Compose: $(docker-compose --version 2>/dev/null | cut -d' ' -f3 | tr -d ',')"
+    else
+        echo -e "  Docker Compose: ${YELLOW}未安装${NC}"
+    fi
+    
+    # 显示磁盘空间
+    echo -e "${CYAN}磁盘空间:${NC}"
+    df -h / | tail -1 | awk '{print "  根分区: " $4 " 可用 / " $2 " 总大小"}'
+    
+    echo -e "${GREEN}✅ 验证完成${NC}"
+}
+
+# 显示使用说明
+show_usage() {
+    echo -e "${GREEN}系统优化与Docker准备脚本 (精简版)${NC}"
+    echo -e "专为小存储空间VPS设计 - 不备份文件${NC}"
+    echo -e ""
+    echo -e "使用方法: $0 [选项]"
+    echo -e ""
+    echo -e "选项:"
+    echo -e "  -h, --help     显示此帮助信息"
+    echo -e "  -c, --clean    只执行清理操作"
+    echo -e "  -o, --optimize 只执行系统优化"
+    echo -e "  -d, --docker   只安装Docker"
+    echo -e "  -a, --all      执行所有操作（默认）"
+    echo -e ""
+    echo -e "功能:"
+    echo -e "  ✅ 系统检测"
+    echo -e "  ✅ 深度清理（节省空间）"
+    echo -e "  ✅ 依赖包安装"
+    echo -e "  ✅ 系统优化配置"
+    echo -e "  ✅ DNS优化"
+    echo -e "  ✅ Docker环境准备"
+    echo -e "  ✅ Docker安装与配置"
+    echo -e ""
+    echo -e "示例:"
+    echo -e "  $0              # 执行所有操作"
+    echo -e "  $0 --clean      # 只执行清理"
+    echo -e "  $0 --docker     # 只安装Docker"
+}
+
+# 主函数
+main() {
+    # 创建日志文件
+    > "$LOG_FILE"
+    
+    # 显示标题
+    echo -e "${PURPLE}"
+    echo "=================================================="
+    echo "     🚀 系统优化与Docker准备脚本 (精简版)"
+    echo "       专为小存储空间VPS设计"
+    echo "=================================================="
+    echo -e "${NC}"
+    
+    # 检查root权限
+    if [ "$EUID" -ne 0 ]; then
+        echo -e "${RED}❌ 请使用root权限运行此脚本${NC}"
+        echo -e "使用: sudo $0"
+        exit 1
+    fi
+    
+    # 解析命令行参数
+    case "${1:-}" in
+        -h|--help)
+            show_usage
+            exit 0
+            ;;
+        -c|--clean)
+            echo -e "${BLUE}执行清理操作...${NC}"
+            detect_os
+            clean_system
+            exit 0
+            ;;
+        -o|--optimize)
+            echo -e "${BLUE}执行系统优化...${NC}"
+            detect_os
+            configure_system_optimization
+            configure_dns
+            exit 0
+            ;;
+        -d|--docker)
+            echo -e "${BLUE}安装Docker...${NC}"
+            detect_os
+            configure_docker_environment
+            install_docker
+            install_docker_compose
+            verify_installation
+            exit 0
+            ;;
+        -a|--all|*)
+            # 执行所有操作
+            ;;
+    esac
+    
+    # 执行完整流程
+    echo -e "${BLUE}开始系统优化与Docker准备...${NC}"
+    
+    detect_os
+    check_architecture
+    clean_system
+    update_package_manager
+    install_basic_dependencies
+    configure_system_optimization
+    configure_dns
+    configure_docker_environment
+    install_docker
+    install_docker_compose
+    
+    echo -e "${GREEN}🎉 所有操作完成！${NC}"
+    echo ""
+    verify_installation
+    echo ""
+    echo -e "${YELLOW}💡 重要提示:${NC}"
+    echo -e "  1. 建议重启系统以使所有配置生效"
+    echo -e "  2. 当前用户已添加到docker组，重新登录后生效"
+    echo -e "  3. 详细日志请查看: $LOG_FILE"
+    echo -e "  4. 脚本已尽可能节省磁盘空间"
+}
+
+# 设置陷阱，确保脚本退出时重置颜色
+trap 'echo -e "${NC}"' EXIT
+
+# 运行主函数
+main "$@"