Currently I am working on a distributed Weibo crawler. Weibo has strict restrictions on account and IP requests. I have seven or eight public IPs, but there are only four servers, so the other four IPs are wasted if not used. So I thought of using a virtual machine or docker to bind the public IP. Since the virtual machine was too bloated, and installing the virtual machine on centos7 was cumbersome, I decided to use docker, and then run my crawler program in docker. How can I make docker bind the static IP of the public network?