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PHP is stable enough to not need Docker.

As in there’s very little ways to fuck up a PHP setup.

You just turn it on and it runs.

Docker isn't used because it helps run unstable programs.

It's used because it combines the entire environment so I know the app runs the same locally as it does when deployed, without needing to install or configure anything on the server.

You just start the image and it runs.

then find out you need to install and configure a series of php extensions

And get rid of all the hardcoded paths, domains, things that only make it work on the specific OS the previous person was using even though there's nothing in the app that would justify it. And then one day, someone introduces Docker, that will make it work everywhere, only now you have to start the containers in some specific order and comprehend some complicated volume setup and it runs 10x slower.

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