1.远程ssh登陆云服务器
2. 更新dotnet6仓库
wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
rm packages-microsoft-prod.deb
3.安装dotnet6
sudo apt-get update && sudo apt-get install -y dotnet-sdk-6.0
4.验证dotnet6环境