anchor.diff: -FROM centos:7
  +FROM alpine:3.4
   
   MAINTAINER dan78uk
   
  
positive.code: RUN nginx -V
  
  # Enable basic configurations and import of external configurations
  RUN yum -y install openssl && \
      yum -y clean all && \
      rm -rf /etc/nginx/conf.d/* && \
      mkdir -p /etc/nginx/external
  RUN sed -i 's/access_log.*/access_log \/dev\/stdout;/g' /etc/nginx/nginx.conf; \
  
negative.code: # 3 Get Mod security configs
  # 4 Compile Nginx
  # 5 Clean solution
  RUN apk update && \
      echo "#### Install required dependencies ####" && \
      apk add build-base linux-headers bash git pcre-dev unzip libxml2 libxml2-dev wget openssl-dev libtool m4 autoconf automake curl apache2-dev zlib-dev && \
      echo "#### Compile Mod Security ####" && \
      git clone https://github.com/SpiderLabs/ModSecurity.git && \
      cd ModSecurity && \
  