anchor.diff:  # Install ngrok to /usr/local/bin
   RUN mkdir -p /tmp/ngrok \
     && cd /tmp/ngrok \
  -  && wget https://dl.ngrok.com/ngrok_2.0.19_linux_amd64.zip \
  +  && wget --no-verbose https://dl.ngrok.com/ngrok_2.0.19_linux_amd64.zip \
     && unzip ngrok_2.0.19_linux_amd64.zip \
     && rm ngrok*.zip \
     && mv ngrok /usr/local/bin \
  
positive.code: # Install terraform to /usr/local/bin
  RUN mkdir -p /tmp/terraform \
    && cd /tmp/terraform \
    && wget https://releases.hashicorp.com/terraform/0.6.11/terraform_0.6.11_linux_amd64.zip \
    && unzip terraform_0.6.11_linux_amd64.zip \
    && rm terraform*.zip \
    && mv terraform* /usr/local/bin \
  
negative.code: RUN npm install -g bower@1.7.1
  
  # Install the statically linked version of wkhtmltopdf
  RUN wget --no-verbose -O /tmp/wkhtmltopdf https://github.com/h4cc/wkhtmltopdf-amd64/raw/master/bin/wkhtmltopdf-amd64 \
    && mv /tmp/wkhtmltopdf /usr/local/bin/ \
    && chmod +x /usr/local/bin/wkhtmltopdf
  
  # Install phantomjs
  RUN mkdir -p /tmp/phantomjs \
    && cd /tmp/phantomjs \
    && wget --no-verbose https://s3.amazonaws.com/travis-phantomjs/phantomjs-2.0.0-ubuntu-14.04.tar.bz2 \
    && tar xfj phantomjs-2.0.0-ubuntu-14.04.tar.bz2 \
    && mv phantomjs /usr/local/bin \
    && cd /tmp \
  