Market data sharing of concurrent live and paper sessions

I have a problem with ibkr-docker which I cannot wrap my head around:

IB allows sharing of market data between live and paper trading accounts as long as both TWS/Gateway run on the same machine. This unfortunately does not work when using docker, because each container counts as a different machine for IB.

As I have a live trading container that I do not want to stop while I am testing some new stuff in paper trading, this is a severe problem for me. Are there any ideas how I could run two TWS instances from within one container or other solutions?

This has been discussed previously in #64, and unfortunately I don't have the bandwidth to write the solution at present.

One way to start would be to modify

ibkr-docker/image-files/start.sh

Lines 64 to 68 in 5888b5e

    
           exec /opt/ibc/scripts/ibcstart.sh "${TWS_MAJOR_VERSION}" $command \ 
        
               "--user=${USERNAME:-}" \ 
        
               "--pw=${PASSWORD:-}" \ 
        
               "--on2fatimeout=${TWOFA_TIMEOUT_ACTION:-restart}" \ 
        
               "--tws-settings-path=${TWS_SETTINGS_PATH:-}"

to run both TWS and IB Gateway.

	exec /opt/ibc/scripts/ibcstart.sh "${TWS_MAJOR_VERSION}" $command \
	"--user=${USERNAME:-}" \
	"--pw=${PASSWORD:-}" \
	"--on2fatimeout=${TWOFA_TIMEOUT_ACTION:-restart}" \
	"--tws-settings-path=${TWS_SETTINGS_PATH:-}"