I want to create a docker-compose file that is able to run on different servers.
For that I have to be able to specify the host-ip or hostname of the server (where all the containers are running) in several places in the docker-compose.yml.
E.g. for a consul container where I want to define how the server can be found by fellow consul containers.
consul: image: progrium/consul command: -server -advertise 192.168.1.125 -bootstrap
I don't want to hardcode 192.168.1.125 obviously.
I could use env_file: to specify the hostname or ip and adopt it on every server, so I have that information in one place and use that in docker-compose.yml. But this can only be used to specifiy environment variables and not for the advertise parameter.
Is there a better solution?