This is a base PHP image, having tags for different PHP versions.
This is used in [opendocks/o-dock] (https://github.com/opendocks/o-dock) as base image to build PHP-FPM service, Which allows to install required php extensions, just by enabling/disabling extensions through build arguments, to customize PHP environment as per project requirements.
See details/code on [opendocks/o-dock] (https://github.com/opendocks/o-dock), and usage details on [o-template] (https://github.com/opendocks/o-template).