This image starts PHP-fpm from the IUS repository
The version tagged 5.6 runs PHP 5.6 and the tags 7.2 and latest are used for PHP 7.2. Make sure, that you choose the right version of PHP for your application.
FPM runs as user/group php-fpm. The pool config is in the file /etc/php-fpm.d/www.conf which has only been modified to listen on all ports and allow connections from all clients. Also the chdir parameter has been set to /php. You can override that file by mounting it into the container
The application is served from the /php folder. To provide an application, just build an image based on this or mount it into /php.
Options to php-fpm can be passed by setting the PHP_OPTIONS variable
docker run -d -p 9000:9000 \
registry.ott-consult.de/oc/php-fpm:latest
docker run -d -p 9000:9000 \
-e PHP_OPTIONS='-d date.timezone = "Europe/Berlin"'
-v /data/phpapp/etc/php-fpm.d/www.conf:/etc/php-fpm.d/www.conf \
-v /data/phpapp/php:/php \
registry.ott-consult.de/oc/php-fpm:latest