fix(build): kubectl download add --max-time 120 + aliyun mirror fallback

scripts/install-kubectl.sh

@@ -27,12 +27,16 @@ esac
 
 PRIMARY="https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/${TARGET_OS}/${KARCH}/kubectl"
 FALLBACK="https://storage.googleapis.com/kubernetes-release/release/${KUBECTL_VERSION}/bin/${TARGET_OS}/${KARCH}/kubectl"
+MIRROR_CN="https://mirrors.aliyun.com/kubernetes/release/${KUBECTL_VERSION}/bin/${TARGET_OS}/${KARCH}/kubectl"
 
 echo "[install-kubectl] ${TARGET_OS}/${KARCH} ${KUBECTL_VERSION} -> ${DEST}"
 
-if curl -fsSL --retry 3 --retry-delay 2 --connect-timeout 20 "${PRIMARY}" -o "${DEST}"; then
+# --max-time 120 限制单次下载总时长，--connect-timeout 20 限制连接阶段 // Logan.Li
+if curl -fsSL --retry 3 --retry-delay 2 --connect-timeout 20 --max-time 120 "${PRIMARY}" -o "${DEST}"; then
     :
-elif curl -fsSL --retry 3 --retry-delay 2 --connect-timeout 20 "${FALLBACK}" -o "${DEST}"; then
+elif curl -fsSL --retry 3 --retry-delay 2 --connect-timeout 20 --max-time 120 "${MIRROR_CN}" -o "${DEST}"; then
+    echo "[install-kubectl] 使用阿里云镜像: ${MIRROR_CN}"
+elif curl -fsSL --retry 3 --retry-delay 2 --connect-timeout 20 --max-time 120 "${FALLBACK}" -o "${DEST}"; then
     echo "[install-kubectl] 使用备用源: ${FALLBACK}"
 else
     echo "[install-kubectl] 下载失败: ${PRIMARY}" >&2