Warning: Stopping docker.service, but it can still be activated by: docker.socket

执行 systemctl stop docker 后提示“Warning: Stopping docker.service, but it can still be activated by: docker.socket”

解释：
这是docker在关闭状态下被访问自动唤醒机制，很人性化，即这时再执行任意docker命令会直接启动

注：如果真的不希望docker被访问自动唤醒，执行 systemctl stop docker 后再执行systemctl stop docker.socket即可