Feature request: Use PHP with same extension availability as PlatformSH

[ptmkenny]

PlatformSH has a nice chart of all the PHP extensions they support (default and available if enabled in php.ini).

It would be super awesome if using this addon would automatically make such a PHP installation available.

I ran into this trying to enable yaml, which PlatformSH includes but ddev does not.

For those who need this now, you can add your own debian packages to provide the extensions you need:
https://ddev.readthedocs.io/en/stable/users/extend/customizing-images/#adding-extra-debian-packages-with-webimage_extra_packages-and-dbimage_extra_packages

[rfay]

Agreed it would be great to match up the extensions. DDEV has so many extensions by default I'm surprised you didn't have php*-yaml.

An issue to add php*-yaml to ddev would be welcome over there as well, if you think it's used often enough to be default.