update: bbr函数增加"测容器环境"

install.sh

@@ -141,15 +141,31 @@ enable_kernel_bbr(){
         return 1
     fi
 
+    # 检测容器环境
+    local virt_type=""
+    if command -v systemd-detect-virt >/dev/null 2>&1; then
+        virt_type=$(systemd-detect-virt 2>/dev/null)
+    fi
+
+    case "$virt_type" in
+        lxc|openvz|docker|podman|container-other)
+            echo "检测到当前运行于容器环境: $virt_type"
+            echo "请在宿主机开启 BBR"
+            return 1
+            ;;
+    esac
+
     if [ "$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)" = "bbr" ]; then
         echo "BBR加速 已经开启，无需重复操作"
         return 0
     fi
 
+    # 尝试加载 bbr 模块（新内核可能已内建）
     if command -v modprobe >/dev/null 2>&1; then
         modprobe tcp_bbr 2>/dev/null || true
     fi
 
+    # 检查内核是否支持 BBR
     if ! sysctl net.ipv4.tcp_available_congestion_control 2>/dev/null | grep -qw bbr; then
         echo "当前系统内核不支持 BBR"
         return 1
@@ -161,22 +177,36 @@ enable_kernel_bbr(){
         local file="/etc/sysctl.conf"
 
         touch "$file"
-        if grep -qE "^[[:space:]]*#?[[:space:]]*$key[[:space:]]*=" "$file"; then
-            sed -i "s|^[[:space:]]*#\?[[:space:]]*$key[[:space:]]*=.*|$key = $value|" "$file"
+
+        # 转义 key，避免 . 被 grep/sed 当作正则
+        local escaped_key
+        escaped_key=$(printf '%s\n' "$key" | sed 's/[.[\*^$()+?{|]/\\&/g')
+
+        if grep -qE "^[[:space:]]*#?[[:space:]]*$escaped_key[[:space:]]*=" "$file"; then
+            sed -i "s|^[[:space:]]*#\?[[:space:]]*$escaped_key[[:space:]]*=.*|$key = $value|" "$file"
         else
             echo "$key = $value" >> "$file"
         fi
     }
 
+    # 写入配置
     set_sysctl_conf "net.core.default_qdisc" "fq"
     set_sysctl_conf "net.ipv4.tcp_congestion_control" "bbr"
 
-    sysctl -w net.core.default_qdisc=fq >/dev/null
-    sysctl -w net.ipv4.tcp_congestion_control=bbr >/dev/null
+    # 立即生效
+    sysctl -w net.core.default_qdisc=fq >/dev/null 2>&1
+    sysctl -w net.ipv4.tcp_congestion_control=bbr >/dev/null 2>&1
 
+    # 验证是否成功
+    if [ "$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)" = "bbr" ]; then
         echo "BBR加速 已开启"
+    else
+        echo "BBR开启失败"
+        return 1
+    fi
 }
 
+
 main(){
     local container_status=$(check_container_status)
     # 显示菜单