anchor.diff: -# Set the base image to ubuntu:16.04
  -FROM        ubuntu:16.04
  +# Set the base image to ubuntu:18.04
  +FROM        ubuntu:18.04
   
   # File Author / Maintainer
   LABEL maintainer "Angela Murrell <me@angelamurrell.com>"
   
  -# Update the repository and install nginx and php7.2
  +# Update the repository and install nginx and php7.3
  +ENV DEBIAN_FRONTEND=noninteractive 
   
   RUN apt-get update && apt-get install -y nano && \
   	apt-get install -y curl && \
  
positive.code: 	apt-get install -y wget && \
  	apt-get install -y git && \
  	apt-get install -y unzip && \
  	apt-get install -y ufw && \
  	apt-get install -y software-properties-common && \
  	apt-get install -y apt-transport-https && \
  	apt-get install -y python-software-properties && \
  	apt-get install -y nginx
  
  RUN LC_ALL=C.UTF-8 add-apt-repository -y ppa:ondrej/php && \
  	apt-get update
  
  RUN apt-get update && \ 
  	apt-get -y --no-install-recommends install php7.2 && \
  	apt-get -y --no-install-recommends install php7.2-fpm && \
  	apt-get -y install freetds-bin tdsodbc unixodbc unixodbc-dev && \
  	apt-get clean && \
  	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/doc/*
  
negative.code: 	apt-get -y install php-sybase && \
  	apt-get -y install php-memcached && \
  	apt-get -y install php-pgsql && \
  	apt-get -y install php-xml && \
  	apt-get -y install php-intl && \
  	apt-get -y install php-gd
  
  RUN printf "\n" | pecl install sqlsrv
  RUN printf "\n" | pecl install pdo_sqlsrv
  RUN pear config-set php_ini /etc/php/7.3/fpm/php.ini
  RUN pecl config-set php_ini /etc/php/7.3/fpm/php.ini
  RUN printf "\n" | pecl install yaml-2.0.4
  
  RUN echo extension=pdo_sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/30-pdo_sqlsrv.ini
  RUN echo extension=sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/20-sqlsrv.ini
  
  # copy 30-pdo_sqlsrv.ini to some locations for loading
  RUN cp /etc/php/7.3/cli/conf.d/20-sqlsrv.ini /etc/php/7.3/fpm/conf.d
  RUN cp /etc/php/7.3/cli/conf.d/30-pdo_sqlsrv.ini /etc/php/7.3/fpm/conf.d
  
  # export var for nano to work in command line
  ENV TERM xterm
  