Dynamic allocations of host IPs

[GlennPegden2]

Currently ports are defined in docker-compose.yml, which makes it impossible to run multiple copies of the same container similtaneous (as they try to claim the same port)

It should be possible to over ride ports using a yml over ride -> https://github.com/compose-spec/compose-spec/blob/main/13-merge.md#sequence however, this may have knock ons for the logic of the UI.