1.添加密钥将Microsoft包签名密钥添加到可信密钥列表中，并添加Microsoft包存储库。打开终端并运行以下命令：sudorpm-Uvhhttps://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm1，安装.NetCore3.1SDKsudoyuminstalldotnet-sdk-3.12、安装.NetCore3.1RunTimesudoyuminstallaspnetcore-runtime-3.13，查看是否安装成功运行命令：dotnet--list-runtimes
