Apt update : failed to fetch expkeysig abf5bd827bd9bf62 nginx signing key signing-key@nginx.com

apt update ，更新 nginx 时报错。 提示 Nginx 签名无效, 无法获取.

failed to fetch https://nginx.org/packages/mainline/debian/dists/bookworm/inrelease the following signatures were invalid: expkeysig abf5bd827bd9bf62 nginx signing key <signing-key@nginx.com>

解决处理：

1. 导入 Nginx.org GPG 密钥：

curl -fSsL https://nginx.org/keys/nginx_signing.key | sudo gpg --dearmor | sudo tee /usr/share/keyrings/nginx-archive-keyring.gpg > /dev/null

2. 验证密钥是否成功导入：

gpg --dry-run --quiet --import --import-options import-show /usr/share/keyrings/nginx-archive-keyring.gpg

3. 导入 Nginx.org APT 存储库

编辑文件为：/etc/apt/sources.list.d/nginx.list

（Mainline 存储库 、稳定存储库 二选一！）

要导入 Nginx Mainline 存储库，请使用：

echo "deb [arch=amd64,arm64 signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] http://nginx.org/packages/mainline/debian `lsb_release -cs` nginx" | sudo tee /etc/apt/sources.list.d/nginx.list

或者，对于 Nginx 稳定存储库：

echo "deb [arch=amd64,arm64 signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] http://nginx.org/packages/debian `lsb_release -cs` nginx" | sudo tee /etc/apt/sources.list.d/nginx.list