tcp port in the latet beta6 - conguring in lists

[mattdale77]

I'm trying to use the tcp port for ssh to my git server with the latest beta6. It is on a different physical server from the tsdproxy. I can't see any examples of syntax of this in lists but I have the following

git:
    ports:
        80/http:
          targets:
            - http://hostname.ts.net:5000
          tlsValidate: false
        222/tcp:
          targets:
            - hostname.ts.net:222
          tlsValidate: false

I added a 222 as a mapping on the tsdproxy container.

I'm sure I've got something wrong but I get connection refused.

Any tips on getting it working?