anchor.diff:          m4 \
           mkisofs \
           mongodb-org \
  -        mplayer \
  +        mongodb-org-mongos \
           mongodb-org-server \
           mongodb-org-shell \
  -        mongodb-org-mongos \
           mongodb-org-tools \
  +        mplayer \
           openjdk-7-jdk \
           openssh-server \
           pkg-config \
  
positive.code:         zip \
          ffmpeg && \
      rm -rf /var/lib/apt/lists/*
  
  # Build/install opencv3
  RUN git clone --branch '3.1.0' https://github.com/opencv/opencv.git && \
  
negative.code:     echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" > /etc/apt/sources.list.d/mongodb-org-3.2.list && \
      apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 32A37959C2FA5C3C99EFBC32A79206696452D198 && \
      echo "deb https://apt.buildkite.com/buildkite-agent stable main" > /etc/apt/sources.list.d/buildkite-agent.list && \
      apt-get update -qq && \
      DEBIAN_FRONTEND=noninteractive \
        apt-get install -y \
          apt-file \
  