anchor.diff:  FROM ubuntu:14.04.2
   MAINTAINER Postman Labs <help@getpostman.com>
   
  -# Install curl and npm
  -
  -RUN apt-get install -y curl;
  -
  -RUN curl -sS https://deb.nodesource.com/setup_8.x | sudo -E bash -
  -
  -RUN apt-get clean && apt-get upgrade -y && apt-get update -y --fix-missing && apt-get install -y nodejs
  +ARG newman_version
  +# Bail out early if NODE_VERSION is not provided
  +RUN if [ ! $(echo $newman_version | grep -oE "^[0-9]+\.[0-9]+\.[0-9]+$") ]; then \
  +        echo "\033[0;31mA valid semver Newman version is required in the newman_version build-arg\033[0m"; \
  +        exit 1; \
  +    fi
   
   # Set node version
   ENV NODE_VERSION 8
   
  -# Set locale
  -ENV LC_ALL en_US.UTF-8
  -ENV LANG en_US.UTF-8
  -ENV LANGUAGE en_US.UTF-8
  +# Install node
  +ADD https://deb.nodesource.com/setup_$NODE_VERSION.x /opt/install_node.sh
  +RUN bash /opt/install_node.sh && apt-get install -y nodejs
   
  -# Install node
  -RUN npm install -g n;
  -RUN n ${NODE_VERSION};
  -
  -ARG newman_version
  -ENV NEWMAN_VERSION=$newman_version
  +# Set environment variables
  +ENV LC_ALL="en_US.UTF-8" LANG="en_US.UTF-8" LANGUAGE="en_US.UTF-8" NEWMAN_VERSION=$newman_version
   
   # Install newman
   RUN npm install -g newman@${NEWMAN_VERSION};
  -
   
   # Set workdir to /etc/newman
   # When running the image, mount the directory containing your collection to this location
  
positive.code: # docker run -v /home/collections:/etc/newman -t postman/newman_ubuntu1404 -c YourCollection.json.postman_collection \
  #                                                                          -e YourEnvironment.postman_environment \
  #                                                                          -H newman_report.html
  
  ENTRYPOINT ["newman"]
negative.code: # In case you mount your collections directory to a different location, you will need to give absolute paths to any
  # collection, environment files you want to pass to newman, and if you want newman reports to be saved to your disk.
  # Or you can change the workdir by using the -w or --workdir flag
  WORKDIR /etc/newman
  
  # Set newman as the default container command
  