anchor.diff:  #
   #####################################################################
   
  -ENV PYTHON_VERSION 3.4.4
  -ENV YASM_VERSION    1.3.0
   ENV NUM_CORES 4
   
  -RUN locale-gen en_US.UTF-8  
  -ENV LANG en_US.UTF-8  
  -ENV LANGUAGE en_US:en  
  -ENV LC_ALL en_US.UTF-8 
  -
  -RUN apt-get -qq remove ffmpeg
  -# remove several traces of python
  -RUN apt-get purge -y python.*
  -
  -# Add the following two dependencies if you want to use --enable-gnutls in FFPMEG: gnutls-bin
  -RUN echo deb http://archive.ubuntu.com/ubuntu precise universe multiverse >> /etc/apt/sources.list; \
  -    apt-get update -qq && apt-get install -y --force-yes \
  -    ant \
  -    autoconf \
  -    automake \
  -    build-essential \
  -    curl \
  -    checkinstall \
  -    cmake \
  -    default-jdk \
  -    git \
  -    g++ \
  -    imagemagick \
  -    libass-dev \
  -    libavcodec-dev \
  -    libavformat-dev \
  -    libfaac-dev \
  -    libjpeg-dev \
  -    libjasper-dev \
  -    libgnutls-dev \
  -    libmp3lame-dev \
  -    libpq-dev \
  -    libpng-dev \
  -    libssl-dev \
  -    libtheora-dev \
  -    libtiff4-dev \
  -    libtool \
  -    libxine-dev \
  -    libxvidcore-dev \
  -    libv4l-dev \
  -    libvorbis-dev \
  -    mercurial \
  -    openssl \
  -    pkg-config \
  -    postgresql-client \
  -    supervisor \
  -    wget \
  -    unzip; \
  -    apt-get clean
  -
  -# gpg: key F73C700D: public key "Larry Hastings <larry@hastings.org>" imported
  -RUN gpg --keyserver ha.pool.sks-keyservers.net --recv-keys 97FC712E4C024BBEA48A61ED3A5CA953F73C700D
  -
  -RUN set -x \
  -	&& mkdir -p /usr/src/python \
  -	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o python.tar.xz \
  -	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o python.tar.xz.asc \
  -	&& gpg --verify python.tar.xz.asc \
  -	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
  -	&& rm python.tar.xz* \
  -	&& cd /usr/src/python \
  -	&& ./configure --enable-shared --enable-unicode=ucs4 \
  -	&& make -j$(nproc) \
  -	&& make install \
  -	&& ldconfig \
  -	&& find /usr/local \
  -		\( -type d -a -name test -o -name tests \) \
  -		-o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
  -		-exec rm -rf '{}' + \
  -	&& rm -rf /usr/src/python
  -
  -# make some useful symlinks that are expected to exist
  -RUN cd /usr/local/bin \
  -	&& ln -s easy_install-3.4 easy_install \
  -	&& ln -s idle3 idle \
  -	&& ln -s pip3 pip \
  -	&& ln -s pydoc3 pydoc \
  -	&& ln -s python3 python \
  -	&& ln -s python-config3 python-config
  -
  -RUN pip install -U pip
   
   WORKDIR /usr/local/src
   
  
positive.code:     && git clone --depth 1 git://github.com/mstorsjo/fdk-aac.git \
      && git clone --depth 1 https://chromium.googlesource.com/webm/libvpx \
      && git clone --depth 1 git://git.opus-codec.org/opus.git \
      && git clone --depth 1 https://github.com/mulx/aacgain.git \
      && curl -Os http://www.tortall.net/projects/yasm/releases/yasm-${YASM_VERSION}.tar.gz \
      && tar xzvf yasm-${YASM_VERSION}.tar.gz
  
  # Build YASM
  # =================================
  WORKDIR /usr/local/src/yasm-${YASM_VERSION}
  RUN ./configure \
      && make -j ${NUM_CORES} \
      && make install
  # =================================
  
  
  # Build L-SMASH
  
negative.code: FROM ampervue/python34
  
  # https://github.com/ampervue/docker-python34-ffmpeg
  
  