docker: Error response from daemon: driver failed programming external connectivity on endpoint proj

docker: Error response from daemon: driver failed programming external connectivity on endpoint project

问题：今天在部署项目的时候，容器映射报错，如图：

原因：docker服务在启动时定义的自定义链DOCKER链被清除，需重启

解决方法：

运行 systemctl restart docker 即可

systemctl restart docker