官方安装指导https://www.microsoft.com/net/learn/get-started/linux/centos
rpm --import https://packages.microsoft.com/keys/microsoft.asc
sh -c 'echo -e "[packages-microsoft-com-prod]\nname=packages-microsoft-com-prod \nbaseurl= https://packages.microsoft.com/yumrepos/microsoft-rhel7.3-prod\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc" > /etc/yum.repos.d/dotnetdev.repo'
yum install libunwind libicu
yum install dotnet-sdk-2.1.103
验证安装是否成功：
dotnet --version
显示出当前的dotnet core版本号
