Forwarding large RTP port ranges to Freeswitch in Docker

tl;dr If you run Freeswitch in Docker and need to forward a RTP port range, you'll run into problems. You can try using the iptable solution explained here. (Exactly the kind of manual setup mess that container deployment is there to solve.)

How do you forward a large number …

Jump into Docker Container Shell

This line is a nuisance:

docker exec -ti containername bash

I'm running it for every of our dozen containers many times a day. I like that it TAB-completes the container name. Other than that it's a nuisance, for these reasons:

It's slow: The variable thing about it, the container name …