anchor.diff:      openssl \
       subversion \
       unzip \
  -    zip; \
  +    zip ; \
     docker-php-ext-install zip
   
   ENV COMPOSER_HOME /composer
  
positive.code: 
  FROM php:7-cli-alpine
  
  MAINTAINER https://github.com/composer/satis
  
  RUN set -eux; \
    apk add --no-cache --upgrade \
      bash \
      curl \
  
negative.code: 
  COPY . /satis/
  
  RUN set -eux ; \
    composer install \
      --no-interaction \
      --no-ansi \
  