anchor.diff:      # && apk del .build-deps \
       \
       && cd \
  -    && addgroup -S www \
  -    && adduser -D -S -s /sbin/nologin -G www www \
  +    && addgroup -S app \
  +    && adduser -D -S -s /sbin/nologin -G app app \
       \
       && wget -c "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR}/ruby-${RUBY_VERSION}.tar.gz" \
       && tar zxvf "ruby-${RUBY_VERSION}.tar.gz" \
  
positive.code:     && tar zxvf "nginx-${NGINX_VERSION}.tar.gz" \
      && cd "nginx-${NGINX_VERSION}" \
      && ./configure  --prefix=/usr/local/nginx \
                      --user=www \
                      --group=www \
                      --with-http_ssl_module \
                      --with-http_realip_module \
                      --with-http_addition_module \
  
negative.code:     && cd .. \
      && rm -rf "node-v${NODE_VERSION}" "node-v${NODE_VERSION}.tar.gz" \
      && echo 'export PATH=/usr/local/node/bin:$PATH' > /etc/profile.d/node.sh \
      && source /etc/profile.d/node.sh
  
  ENV APP_PORT 3000
  EXPOSE 3000
  
  VOLUME ["/home/app"]
  ENTRYPOINT ["/usr/local/nginx/sbin/nginx"]
  CMD ["-c", "/home/app/nginx.conf"]
  