anchor.diff:      && rm -rf /var/lib/apt/lists/*
   
   # Install development packages
  -RUN apt-get update && apt-get install -y sudo git build-essential mercurial vim tmux openssh-server software-properties-common bash-completion
  +RUN apt-get update && apt-get install -y sudo git build-essential mercurial vim tmux openssh-server software-properties-common bash-completion debian-keyring debian-archive-keyring
   
   # Add gazebo repository
   RUN sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main" > /etc/apt/sources.list.d/gazebo-stable.list'
  
positive.code: # Download and compile Gazebo
  RUN hg clone https://bitbucket.org/osrf/gazebo /home/gazebo/ws/gazebo
  # Use branch visualization on demand
  RUN cd /home/gazebo/ws/gazebo; hg up -r ${gazebo_commit}; mkdir build; cd build; cmake -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_TESTS_COMPILATION=FALSE ../; make -j4; make install
  
  RUN mkdir -p /home/gazebo/ws/src
  
  #Install Manifold dependencies
  RUN apt-get update && apt-get install -y cmake pkg-config python ruby-ronn
  
  USER gazebo
  
  # Select Manifold commit
  ENV manifold_commit 5a095e0
  
  #Clone and install Manifold
  RUN hg clone https://bitbucket.org/osrf/manifold /tmp/manifold
  RUN cd /tmp/manifold; hg up -r ${manifold_commit}; mkdir build; cd build; cmake -DCMAKE_INSTALL_PREFIX=/home/gazebo/manifold ../; cmake -DCMAKE_BUILD_TYPE=Debug ../; make -j4; sudo make install
  
  WORKDIR /home/gazebo/ws
  CMD ["tmux"]
  
negative.code: FROM ubuntu:xenial
  MAINTAINER Javier Choclin jchoclin@ekumenlabs.com
  
  # setup environment
  ENV DEBIAN_FRONTEND noninteractive
  RUN locale-gen en_US.UTF-8
  ENV LANG en_US.UTF-8
  
  