anchor.diff:             openssl-dev \
              ruby-dev \
              ruby-mini_portile \
  -    && apk add \
  +    && apk add --no-cache \
              bash \
              ca-certificates \
              libffi \
  
positive.code:     && gem install bundler \
      && bundle install --retry=3 \
      && apk del --purge deps \
      && rm -rf /tmp/* /var/cache/apk/*
  
  COPY ./Portus .
  
negative.code: COPY /Portus/Gemfile* ./
  
  RUN set -ex \
      && apk add --no-cache -t deps \
             gcc \
             libxslt-dev \
             libxml2-dev \
  