FROM php:5.6-cli RUN apt update && \ apt -qy install git unzip zlib1g-dev && \ docker-php-ext-install bcmath sockets pcntl zip WORKDIR /src RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" && \ php composer-setup.php && \ php -r "unlink('composer-setup.php');" && \ mv composer.phar /usr/local/bin/composer