This is my environment. Please note this is also set in the relevant development modes and production modes.
Dev:
https://ar.dev.loc/
https://en.dev.loc/
Live:
I am not familiar with magneto but this may work for you. When I update my sites I follow those steps:
Suppose the site is located under site
directory.
$ cp -r site site-update
# update the site in site-update directory
$ mv site site-old && mv site-update site
This way my sites are updated without any downtime.