run as unprivileged user

[djdevin]

A follow up to #8 that I forgot to mention, it would be stellar if this could use a base image or had configuration that doesn't require running as root.

Then you could launch this on pretty much any managed container service out there (OpenShift, Heroku, etc.).

https://github.com/sclorg/s2i-php-container/blob/master/7.1/root/usr/libexec/container-setup

I use this container so often because we have a ton of customers with SAML integrations and it helps with automated testing too. Being able to spin up a bunch of these in k8s with different environment settings would be awesome.