Configurations
You can configure the following environment vars, these are the defaults.
ENV ENVIRONMENT dev
ENV PHP_FPM_USER www-data
ENV PHP_FPM_PORT 9000
ENV PHP_ERROR_REPORTING "E_ALL \& ~E_NOTICE \& ~E_STRICT \& ~E_DEPRECATED"
Development and permissions
Run php-fpm process as root user to avoid cli and fpm permission issues.
Never ever use this in production!
ENV PHP_FPM_USER root