The problem is when one app requires a different apache(or some other random requisite) version than the other one, docker just deals with that so I don't have to. That's what I like about it.

Because with docker you don't even have to install and setup Apache and MariaDB. You run one command and it knocks out that whole process. Not go mention the security implications of completely seperating your software.

I can also speak from experience when I say it makes development and delivery of software soooo much easier. As a self hosted software developer I can promise you that if I created an instruction set to deploy the software I build bare metal rather than just containerizing it. No offense to fellow self hosters by any means, but if I require a multi step instruction set rather than a one liner docker command I will get more issues. Humans make mistakes, and when I can automate it out with container orchestration it absolutely makes it easier for the user.