为了在docker中支持GPU，NVidia之前是弄了个nvidia-docker2，现在升级为NVIDIA Container Toolkit了。官方说法是"Usage of nvidia-docker2 packages are deprecated since NVIDIA GPUs are now natively supported as devices in the Docker runtime"。

Docker的好处之一，就是在Container里面可以随意瞎搞，不用担心弄崩Host的环境。