Ubuntu 16.04上的Docker CE安装崩溃网络

I am trying to install docker-ce 17.09 on ubuntu 16.04 instance on AWS. The instance is behind the company VPC and the security group assigned allows all TCP & UDP traffics. However, the whole network crashed and I lost SSH connection to my instance when the installation of Docker reached:I am trying to install docker-ce 17.09 on ubunt