anchor.diff:  						gettext-base \
   	&& rm -rf /var/lib/apt/lists/*
   
  -# Set time zone
  -ENV TZ=Europe/Berlin
  +## Install Node.js
  +# Source: https://github.com/nodejs/docker-node/blob/master/6.9/wheezy/Dockerfile
  +RUN groupadd -r node && useradd -r -g node node
   
  -# wkhtmltopdf
  +# gpg keys listed at https://github.com/nodejs/node
  +RUN set -ex \
  +  && for key in \
  +    9554F04D7259F04124DE6B476D5A82AC7E37093B \
  +    94AE36675C464D64BAFA68DD7434390BDBE9B9C5 \
  +    0034A06D9D9B0064CE8ADF6BF1747F4AD2306D93 \
  +    FD3A5288F042B6850C66B31F09FE44734EB7990E \
  +    71DCFD284A79C3B38668286BC97EC7A07EDE3FC1 \
  +    DD8F2338BAE7501E3DD5AC78C273792F7D83545D \
  +    B9AE9905FFD7803F25714661B63B535A4C206CA9 \
  +    C4F0DFFF4E8C1A8236409D08E73BC641CC11F4C8 \
  +  ; do \
  +    gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
  +  done
  +
  +ENV NPM_CONFIG_LOGLEVEL info
  +ENV NODE_VERSION 6.9.1
  +
  +RUN curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.xz" \
  +  && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
  +  && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
  +  && grep " node-v$NODE_VERSION-linux-x64.tar.xz\$" SHASUMS256.txt | sha256sum -c - \
  +  && tar -xJf "node-v$NODE_VERSION-linux-x64.tar.xz" -C /usr/local --strip-components=1 \
  +  && rm "node-v$NODE_VERSION-linux-x64.tar.xz" SHASUMS256.txt.asc SHASUMS256.txt \
  +  && ln -s /usr/local/bin/node /usr/local/bin/nodejs
  +
  +# Install wkhtmltopdf
   RUN apt-get update && apt-get install -y libxrender1 libxext6 fonts-lato --no-install-recommends && \
       curl -L#o wk.tar.xz http://download.gna.org/wkhtmltopdf/0.12/0.12.3/wkhtmltox-0.12.3_linux-generic-amd64.tar.xz \
       && tar xf wk.tar.xz \
  
positive.code: FROM ruby:2.3.3
  
  # Install MySQL client and NodeJS
  RUN apt-get update && apt-get install -y nodejs mysql-client --no-install-recommends
  
  # Install Nginx
  # Source: https://github.com/nginxinc/docker-nginx/blob/master/stable/jessie/Dockerfile
  
negative.code:     && rm wk.tar.xz \
      && rm -r wkhtmltox
  ADD docker/wkhtmltopdf/fontconfig.xml /etc/fonts/conf.d/10-wkhtmltopdf.conf
  
  # Set time zone
  ENV TZ=Europe/Berlin
  
  # Add the nginx site and config
  RUN rm -rf /etc/nginx/sites-available/default
  