TCP multiplexing over a shell-based stream
Add the static server to your container image:
ADD https://convox-binaries.s3.amazonaws.com/plex-static /plex-static
Install the client on your local machine
$ go get -u github.com/convox/plex
Use the client to multiplex a TCP stream over a one-off shell:
$ plex -l 4369:4369 -r 4369:4369 convox exec PID /plex-static server
Specify -l 3000:4000 to forward local port 3000 to port 4000 inside the container.
Specify -r 5000:6000 to forward port 5000 inside the container to port 6000 locally.
You can specify both of these options as many times as you like.