anchor.diff:  RUN apt-get -y update
   
   RUN apt-get install -y openjdk-8-jdk
  -RUN apt-get install -y python-pip python-requests python-psutil
  +RUN apt-get install -y python-dev python-pip python-requests python-psutil
   
   # Set ulimit
   RUN echo "* soft nofile 1048576" > /etc/security/limits.conf
  
positive.code: RUN echo "LC_ALL=en_US.UTF-8" >> /etc/environment
  RUN echo "LANG=en_US.UTF-8" >> /etc/environment
  
  # Install PyTorch
  RUN pip install http://download.pytorch.org/whl/cu91/torch-0.3.1-cp27-cp27mu-linux_x86_64.whl
  
  # Create a new user "mmt" and login as "mmt"
  RUN apt-get install -y sudo && rm -rf /var/lib/apt/lists/*
  RUN useradd mmt
  RUN passwd -d mmt
  RUN usermod -aG sudo mmt
  WORKDIR /home/mmt
  RUN chown mmt:mmt /home/mmt
  USER mmt
  
  # Install MMT
  RUN wget -qO- https://github.com/ModernMT/MMT/releases/download/v2.5/mmt-2.5-ubuntu.tar.gz | tar xvfz -
  WORKDIR /home/mmt/mmt
  
  # Make MMT example engine
  RUN ./mmt create en it examples/data/train
  
negative.code: FROM nvidia/cuda:9.0-cudnn7-runtime-ubuntu16.04
  MAINTAINER Davide Caroselli <davide@modernmt.eu>
  
  # Install dependencies
  