FROM debian:stretch-slim

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
    	curl \
	git \
    	php \
	zip \
	unzip \
	php-zip \
	php-xml \
	composer \
    && rm -rf /var/lib/apt/lists/*

RUN composer global require "squizlabs/php_codesniffer=*"
RUN /root/.composer/vendor/bin/phpcs --config-set default_standard PSR2
CMD ["/root/.composer/vendor/bin/phpcs", "/data"]