ARG version FROM php:$version RUN curl --silent --show-error https://getcomposer.org/installer | php RUN mv composer.phar /usr/local/bin/composer RUN apt-get update -y && \ apt-get upgrade -y && \ apt-get dist-upgrade -y && \ apt-get -y autoremove && \ apt-get clean RUN apt-get install -y zip unzip git ENV COMPOSER_ALLOW_SUPERUSER=1 WORKDIR /twilio