Docker documentation on ports

Thank you!

hmm for me the lines under ‘Using different ports’ section are mentioning changing the cms_custom-ports.yml.template to cms_custom-ports.yml and making those changes to ports in that file.
Then to use
docker-compose -f cms_custom-ports.yml up -d
instead of the default
docker-compose up -d

but yes you can edit ports in docker-compose.yml and still use the default command for it.

Could you tell me what line in the documentation implies that changes should be made to both of those files?
Perhaps you’re onto something I unfortunately do not see it.