Dockerfile

from php:7.0.14-cli

# Update apt repos for Nodejs and Yarn
RUN curl -sL https://deb.nodesource.com/setup_9.x | bash -
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

RUN apt-get update && \
	apt-get install -y build-essential bzip2 inotify-tools nodejs yarn git zlib1g-dev libbz2-dev libpng12-dev libjpeg-dev unzip curl && \
	docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr && \
	docker-php-ext-install zip bz2 gd

# Allow Composer to be run as root
ENV COMPOSER_ALLOW_SUPERUSER 1

# Install Composer and make it available in the PATH
RUN curl -o /tmp/composer-setup.php https://getcomposer.org/installer \
&& curl -o /tmp/composer-setup.sig https://composer.github.io/installer.sig \
# Make sure we're installing what we think we're installing!
&& php -r "if (hash('SHA384', file_get_contents('/tmp/composer-setup.php')) !== trim(file_get_contents('/tmp/composer-setup.sig'))) { unlink('/tmp/composer-setup.php'); echo 'Invalid installer' . PHP_EOL; exit(1); }" \
&& php /tmp/composer-setup.php --no-ansi --install-dir=/usr/local/bin --filename=composer --snapshot \
&& rm -f /tmp/composer-setup.*