anchor.diff:  
   EXPOSE 80 443
   
  +HEALTHCHECK --interval=2m --timeout=3s --retries=2 \
  +  CMD curl -f http://localhost/ || exit 1
  +
   CMD ["nginx", "-g", "daemon off;"]
  
positive.code:         libatomic_ops-dev \
          libc-dev \
          libjpeg-turbo-dev \
          libxslt-dev \
          linux-headers \
          luajit-dev \
          libpng-dev \
          make \
          openssl-dev \
          patch \
  
negative.code:         bison \
          build-base \
          cmake \
          expat-dev \
          file \
          flex \
  