Thanks for the reply, but that appears to direct on how to use multiple Docker images for hosting multiple sites. (Correct me if that’s wrong.)
I was looking for a solution to host multiple sites with separate domains in a single docker image/container.
EDIT: It’a a little late. So I’m a bit in a hurry. I’ll give that a more thorough reading over tomorrow. From my brief glance, it doesn’t appear to answer my question.