anchor.diff:      curl -LOSs ${url}/$file && \
       sha256sum $file | grep -q "$sha256sum" || \
       { echo "expected $sha256sum, got $(sha256sum $file)"; exit 13; } && \
  -    file=/etc/php/7.0/fpm/php-fpm.conf && \
  +    file=/etc/php/7.3/fpm/php-fpm.conf && \
       sed -i 's|^;*\(daemonize\) *=.*|\1 = no|' $file && \
       sed -i 's|^;*\(error_log\) *=.*|\1 = /proc/self/fd/2|' $file && \
  -    file=/etc/php/7.0/fpm/pool.d/www.conf && \
  +    file=/etc/php/7.3/fpm/pool.d/www.conf && \
       sed -i 's|^;*\(access_log\) *=.*|\1 = /proc/self/fd/2|' $file && \
       sed -i 's|^;*\(/catch_workers_output *=.*\)|\1|' $file && \
       sed -i 's|^;*\(chdir\) *=.*|\1 = /srv/www|' $file && \
       sed -i 's|^;*\(/clear_env *=.*\)|\1|' $file && \
       sed -i 's|^;*\(listen\) *=.*|\1 = [::]:9000|' $file && \
       unset file && \
  -    for i in /etc/php/7.0/*/php.ini; do \
  +    for i in /etc/php/7.3/*/php.ini; do \
           sed -i 's|^;*\(doc_root\) *=.*|\1 = "/srv/www"|' $i; \
           sed -i '/php_errors/s|^;*\(error_log\) *=.*|\1 = /proc/self/fd/2|' $i; \
           sed -i 's|^;*\(expose_php\) *=.*|\1 = On|' $i; \
  
positive.code: 
  RUN export DEBIAN_FRONTEND='noninteractive' && \
      export url='https://download.owncloud.org/community' && \
      export version='10.3.2' && \
      export sha256sum='0af4429bd477b4d9f829c9a69b47bb855d22c4a36de7d3e402f3' && \
      apt-get update -qq && \
      apt-get install -qqy --no-install-recommends bzip2 ca-certificates curl \
                  openssl smbclient php7.0-bz2 php7.0-curl php7.0-fpm php7.0-gd \
                  php7.0-gmp php7.0-imap php7.0-intl php7.0-json php7.0-ldap \
                  php7.0-mbstring php7.0-mcrypt php7.0-mysql php7.0-opcache \
                  php7.0-pgsql php7.0-sqlite3 php7.0-xml php7.0-zip php-apcu-bc \
                  php-imagick php-memcached php-redis procps \
                  $(apt-get -s dist-upgrade|awk '/^Inst.*ecurity/ {print $2}') &&\
      file="owncloud-${version}.tar.bz2" && \
      echo "downloading $file ..." && \
  
negative.code:         sed -i 's|^;*\(post_max_size\) *=.*|\1 = 16G|' $i; \
          sed -i 's|^;*\(upload_max_filesize\) *=.*|\1 = 16G|' $i; \
      done && \
      echo '\n[apc]\napc.enable_cli = 1' >>/etc/php/7.3/mods-available/apcu.ini&&\
      apt-get purge -qqy ca-certificates curl && \
      apt-get autoremove -qqy && apt-get clean && \
      ln -s /srv/www /var/ && \
  