Problem: When the communication protocol was implemented before, the 4g was disconnected and the network was blocked; but after the 4g was restored, the connection was still not restored; it is suspected that the 4g network card is mapped to the docker container and needs to be rebuilt; it is like a serial port; but it is not the case.
There is no special relationship between docker network configuration and 4G network card; 4G network card and wired network card are the same; there is no special relationship