From 7d7a69e686974bfc5068e6dd688e3119d9ff2604 Mon Sep 17 00:00:00 2001
From: kaka <kaka@git.com>
Date: Wed, 4 Nov 2026 07:49:26 +0800
Subject: [PATCH] perf(host-init): skip APT refresh when baseline packages are
 installed

---
 README.md    |  2 ++
 host-init.sh | 17 +++++++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index db8c209..9ed6fa9 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,8 @@ curl -fsSL 'https://scripts.example.com/releases/<40位小写Git提交>/install.
 Docker、Headscale、公钥注入和安全配置后续由 Komodo 任务处理。没有 Core API 凭据下发。
 已有身份、配置或二进制不符时停止，不自动替换身份。源文件可直接 bash install.sh --help。
 
+`host-init.sh` 先检查基础包安装状态，仅在缺包时更新 APT 索引并补齐缺失包；已有完整基线的重跑不会无条件访问软件源。Docker 固定包仍须在执行前准备，构建与资源导入单独计时。
+
 ## Headscale 接入
 
 `tailscale.sh` 使用显式版本、已准备的本地 DEB、SHA-256、HTTPS 控制端和节点名称。首次接入还需 root 所有、0600 权限的短期单次授权 key 文件；执行后清除临时 key 文件。既有 Running 节点直接复核身份，不需要新 key。
diff --git a/host-init.sh b/host-init.sh
index 2bb3e42..e35e037 100644
--- a/host-init.sh
+++ b/host-init.sh
@@ -3,6 +3,20 @@
 set -euo pipefail
 export LC_ALL=C
 fail() { printf 'ERROR: %s\n' "$*" >&2; return 1; }
+ensure_baseline_packages() {
+  local package missing=()
+  for package in ca-certificates curl jq git openssl openssh-client iproute2; do
+    if [[ $(dpkg-query -W -f='${db:Status-Status}' "$package" 2>/dev/null) != installed ]]; then
+      missing+=("$package")
+    fi
+  done
+  if ((${#missing[@]})); then
+    apt-get -o DPkg::Lock::Timeout=60 update
+    apt-get -o DPkg::Lock::Timeout=60 install -y --no-install-recommends "${missing[@]}"
+  else
+    echo 'Baseline packages already installed; APT refresh skipped.'
+  fi
+}
 check_existing_binding() {
   local state_dir=$1 expected=$2 bound=''
   local binding="$state_dir/binding"
@@ -59,8 +73,7 @@ main() {
   umask 077
   exec 9>>/run/lock/platform-host-init.lock; flock -n 9 || { fail 'Host initialization is already running'; return 1; }
   check_existing_binding /var/lib/platform-bootstrap "$name"
-  apt-get -o DPkg::Lock::Timeout=60 update
-  apt-get -o DPkg::Lock::Timeout=60 install -y --no-install-recommends ca-certificates curl jq git openssl openssh-client iproute2
+  ensure_baseline_packages
   if ((${#debs[@]})); then apt-get -o DPkg::Lock::Timeout=60 install -y "${debs[@]}"; fi
   hostnamectl set-hostname "$name"
   if [[ -n "$public_key" ]]; then