anchor.diff:          python-setuptools \
           python-openssl \
           python2.7 \
  +
  +
       && sed -i 's/^# en_US.UTF-8 UTF-8$/en_US.UTF-8 UTF-8/g' /etc/locale.gen \
       && locale-gen \
       && update-locale LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 \
  
positive.code:     LC_CTYPE=en_US.UTF-8 \
      LC_MESSAGES=en_US.UTF-8 \
      LC_ALL=en_US.UTF-8
  
  # buildDeps should be packages needed only to build some other packages as
  # these packages are purged in a later step.
  
negative.code:         /usr/share/doc \
          /usr/share/doc-base
  
  # Install  Node.js
  RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - \
      && apt-get install -y nodejs
  
  # Install yarn
  RUN curl -sS http://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
      && echo "deb http://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
      && apt-get update -yqq \
      && apt-get install -yqq --no-install-recommends yarn
  
  # Install go
  RUN cd /tmp && \
      wget -O /tmp/go.tar.gz https://redirector.gvt1.com/edgedl/go/go1.9.2.linux-amd64.tar.gz && \
  