anchor.diff:          # for webp
           libwebp-dev \
           postgresql-dev \
  +        # for yaml
  +        yaml-dev \
           # for imagemagick
           imagemagick \
           imagemagick-libs \
  
positive.code:     && apk add --no-cache --virtual .phpize-deps $PHPIZE_DEPS \
      && yes '' | pecl install -f apcu \
      && yes '' | pecl install -f xdebug \
      && yes '' | pecl install -f redis-4.3.0 \
      && yes '' | pecl install -f imagick \
      && docker-php-ext-enable apcu redis xdebug imagick \
  
negative.code:     && sed -i '1s/^/;Intentionally disabled. Enable via setting env variable XDEBUG_ENABLE to true\n;/' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
      && rm -rf /var/cache/apk/* /tmp/pear/ \
      && apk del .phpize-deps \
      && echo "extension=yaml.so" > /usr/local/etc/php/conf.d/yaml.ini \
      && mkdir -p /tmp/newrelic && cd /tmp/newrelic \
      && wget https://download.newrelic.com/php_agent/archive/${NEWRELIC_VERSION}/newrelic-php5-${NEWRELIC_VERSION}-linux-musl.tar.gz \
      && gzip -dc newrelic-php5-${NEWRELIC_VERSION}-linux-musl.tar.gz | tar --strip-components=1 -xf - \
  