在尝试安装 nvidia-docker 的时候（ubuntu 22.04系统Docker和Nvidia-docker的安装、测试，及运行GUI应用），执行如下命令增加 nvidia 源：
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$ distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \ && curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - \ && curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list |
系统发出如下警告：
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Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)). |
经过分析，是脚本中的如下部分导致：
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$ curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo tee /etc/apt/trusted.gpg.d/nvidia-docker.gpg |
解决方法为修改为使用如下脚本：
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$ curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg $ sudo chmod 644 /etc/apt/trusted.gpg.d/nvidia-docker.gpg |
完整修改后的脚本如下：
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$ distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \ && curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg \ && sudo chmod 644 /etc/apt/trusted.gpg.d/nvidia-docker.gpg \ && curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list |