We don't have an option for this at the moment. We maybe want to add a --config argument or something along those lines at some point, but that does not exist yet. :)

docker-compose does something like this. You can use one or more -f options to specify the paths to docker-compose.yml files, and then the program merges the YAML files.

When you supply multiple files, Compose combines them into a single configuration. Compose builds the configuration in the order you supply the files. Subsequent files override and add to their predecessors.