安装SDK
1、添加微软的源
sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
sudo 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'
2、安装SDK
sudo yum update
sudo yum install libunwind libicu
sudo yum install dotnet-sdk-2.0.3
安装成功 dotnet --version 提示版本 2.0.3
安装Jexus
1、安装jexus（独立版：带mono）
curl https://jexus.org/release/x64/install.sh|sh
安装成功提示 OK, Jexus has been installed in /usr/jexus.
2、配置Asp.net core 项目
