Update jessie kernel URL.

diff --git a/create-image b/create-image
index 4005415..b95f873 100755 (executable)
--- a/create-image
+++ b/create-image
@@ -145,7 +145,7 @@ class ImageCreator
             # Note: 2019-10-08 時点で Debian9 のカーネルバージョンに対応していないので、エラー回避のために既存のカーネルを全て削除し、強制的に jessie のカーネルをイントールする
             system("rm", "-f", "#{dir}/var/lib/dpkg/info/linux-image-#{`uname -r`.chomp}.prerm")
             system({'DEBIAN_FRONTEND' => 'noninteractive'}, "chroot", dir, "apt", "remove", "--purge", "-y", "linux-image-*")
-            system("wget", "-O", "#{dir}/tmp/linux.deb", "http://security.debian.org/debian-security/pool/updates/main/l/linux/linux-image-3.16.0-10-amd64_3.16.74-1_amd64.deb") or raise "Failed to get jessie kernel"
+            system("wget", "-O", "#{dir}/tmp/linux.deb", "http://security-cdn.debian.org/debian-security/pool/updates/main/l/linux/linux-image-3.16.0-10-amd64_3.16.81-1_amd64.deb") or raise "Failed to get jessie kernel"
             system("chroot", dir, "dpkg", "-i", "/tmp/linux.deb")
             system({'DEBIAN_FRONTEND' => 'noninteractive'}, "chroot", dir, "apt", "install", "-f", "-y") or raise "Failed to install jessie kernel"
           else