1、开发版SDK安装（构建开发环境）
1.1 .net core 3.1 SDK
sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
sudo yum install dotnet-sdk-3.1
# 检查安装是否正确，不出错就OK
dotnet --info
1.2 .net 5 SDK
sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
sudo yum install dotnet-sdk-5.0
# 检查安装是否正确，不出错就OK
dotnet --info
2、运行时安装(构建正式发布环境)
2.1 .net core 3.1 runtime
sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
sudo yum install aspnetcore-runtime-3.1
2.2 .net 5 runtime
sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
sudo yum install aspnetcore-runtime-5.0
