Limit port 30033 to TCP in docker-compose

[cgi1]

From the official page:

Service | Protocol | Local Port (Server) | Required?
-- | -- | -- | --
Voice | UDP | 9987 | Yes
Filetransfer | TCP | 30033 | Yes

So on the docker hubb examples a more safe way would be:

30033:30033 will become 30033:30033/tcp