anchor.diff:      rustc \
     && apt-get clean -y \
     && npm install -g \
  -    coffee-script \
  +    coffeescript \
       typescript \
       livescript \
     && adduser --disabled-password --gecos "" aicomp \
  
positive.code:   && apt-get install -y \
      clang \
      clisp \
      dmd-bin \
      erlang \
      gauche \
      gdc \
  
negative.code: FROM ubuntu:18.10
  MAINTAINER Kazunori Sakamoto
  
  ENV TZ=Asia/Tokyo
  
  RUN apt-get update \
    && apt-get dist-upgrade -y \
    && apt-get install -y tzdata \
    && apt-get install -y build-essential curl wget dirmngr zip unzip dos2unix \
    && curl -sL https://deb.nodesource.com/setup_10.x | bash - \
    && wget http://master.dl.sourceforge.net/project/d-apt/files/d-apt.list -O /etc/apt/sources.list.d/d-apt.list \
    && apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net --recv-keys EBCF975E5BA24D5E \
    && curl -sL "https://keybase.io/crystal/pgp_keys.asc" | apt-key add - \
    && echo "deb https://dist.crystal-lang.org/apt crystal main" | tee /etc/apt/sources.list.d/crystal.list \
    && apt-get update \
    && apt-get -y --allow-unauthenticated install --reinstall d-apt-keyring \
    && apt-get update \
  