anchor.diff: -FROM ubuntu:12.04
  +FROM ubuntu
   MAINTAINER Vostrikov Vitaliy
   
   USER root
  
positive.code: ADD . /root/application/
  RUN pub get --offline
  
  RUN pub build
  
  RUN \
    pub run dart_codecov_generator \
  
negative.code: ENV CONTENT_SHELL_VERSION 1.19.1
  
  #--- Install third-party dependencies ---
  RUN \
    echo "deb http://archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse " >> /etc/apt/sources.list && \
    apt update
  RUN \
    apt install -y \
        unzip \
        git \
        wget
  
  #--- Installing content shell ---
  RUN \
    echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections && \
    apt install --no-install-recommends -y -q \
        chromium-browser \
        xvfb \
        libudev0 \
        libgconf-2-4 \
        ttf-kochi-gothic \
        ttf-kochi-mincho \
        ttf-mscorefonts-installer \
        ttf-indic-fonts \
        ttf-dejavu-core \
        ttf-indic-fonts-core \
        fonts-thai-tlwg \
        msttcorefonts
  RUN \
    cd /root \
    && wget \
    http://gsdview.appspot.com/dart-archive/channels/$CHANNEL/release/$CONTENT_SHELL_VERSION/dartium/content_shell-linux-x64-release.zip \
    && unzip content_shell-linux-x64-release.zip \
    && rm content_shell-linux-x64-release.zip \
    && mv drt-lucid64-full-$CHANNEL-$CONTENT_SHELL_VERSION.0 content_shell
  ENV PATH "$PATH:/root/content_shell"
  
  ENV DISPLAY :99.0
  RUN \
    cd /etc/init.d/ \
    && wget --no-check-certificate -O \
    /etc/init.d/xvfb https://gist.githubusercontent.com/dloman/8303932/raw/a9534ba144388014aab20776e84db2c720a366bf/xvfb \
    && chmod -R 777 xvfb \
    && /etc/init.d/xvfb start
  
  #--- Installing Dart SDK ---
  RUN \
   cd /root \
   && wget \
   https://storage.googleapis.com/dart-archive/channels/$CHANNEL/release/$SDK_VERSION/sdk/dartsdk-linux-x64-release.zip \
   && unzip dartsdk-linux-x64-release.zip \
   && rm dartsdk-linux-x64-release.zip
  