Dockerfile

FROM php:7.1-apache

# install the PHP extensions we need
RUN set -ex; \
	\
	apt-get update; \
	apt-get install -y \
		libjpeg-dev \
		libpng12-dev \
	; \
	rm -rf /var/lib/apt/lists/*; \
	\
	docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr; \
	docker-php-ext-install gd mysqli opcache

# set recommended PHP.ini settings
# see https://secure.php.net/manual/en/opcache.installation.php
RUN { \
		echo 'opcache.memory_consumption=128'; \
		echo 'opcache.interned_strings_buffer=8'; \
		echo 'opcache.max_accelerated_files=4000'; \
		echo 'opcache.revalidate_freq=2'; \
		echo 'opcache.fast_shutdown=1'; \
		echo 'opcache.enable_cli=1'; \
	} > /usr/local/etc/php/conf.d/opcache-recommended.ini

RUN { \
		echo 'file_uploads=On'; \
		echo 'memory_limit=256M'; \
		echo 'upload_max_filesize=256M'; \
		echo 'post_max_size=300M'; \
		echo 'max_execution_time=600'; \
	} > /usr/local/etc/php/conf.d/uploads.ini

RUN a2enmod setenvif headers deflate filter expires rewrite include

VOLUME /var/www/html

CMD ["apache2-foreground"]