[marcosdumay]

Python, Ruby, and to a much larger extent PHP are the Docker showcase!

For example, if you have a program that uses wsgi and runs on python 2.7, and another wsgi program that runs on python 3.16, you will absolutely need 2 different web servers to run them.

You can give different ports to both, and install an nginx on port 80 with a reverse proxy. But software tends to come with a lot of assumptions that make ops hard, and they will often not like your custom setup... but they will almost certainly like a normal docker setup.