Anyway to get two configuration.yaml files?

Here’s my use case:
I have two docker containers on the same physical Intel NUC. One for my Live (PROD) instance and the other as a development (DEV) sandbox where I try new settings, automations etc.

What I would like to do, is have a “main” configuration.yaml file for items that are identical in both instances. Then be able to slipstream a second configuration.yaml for items that could differ or things that I only want to include on the Live system.

Example: Since it’s on the same box, my port is different on both system. I would like to make the configuration on the second configuration file, so this way I could move the main configuration file without making changes to it. I also would like to enable Homekit, but just in Live, also as not to go over the maximum allowed calls to certain websites (like World Tides) I would like to omit it from DEV. Lastly, if I ever want to setup a reverse proxy with SSL certificates, I would like the setup again only on the Live Docker container.

Has anyone of you ever did something like this or have a workaround?

hass support -c argument to set config folder.

hass --help