anchor.diff:          build-base \  
           git \
           php${PHP_MAJOR_VERSION}-dev \
  -    && wget -q -O - https://pecl.php.net/get/xdebug-${XDEBUG_VERSION}.tgz \
  +        yaml-dev \
  +    && wget -q -O - https://pecl.php.net/get/xdebug-${PECL_XDEBUG_VERSION}.tgz \
           | tar -xzf - -C /tmp \
  -    && cd /tmp/xdebug-${XDEBUG_VERSION} \
  +    && cd /tmp/xdebug-${PECL_XDEBUG_VERSION} \
       && phpize \
       && ./configure --prefix=/usr \
       && make \
       && make test \
       && make install \
       && rm -rf /tmp/xdebug* \
  +    ## yaml
  +    && wget -q -O - https://pecl.php.net/get/yaml-${PECL_YAML_VERSION}.tgz \
  +        | tar -xzf - -C /tmp \
  +    && cd /tmp/yaml-${PECL_YAML_VERSION} \
  +    && phpize \
  +    && ./configure --prefix=/usr \
  +    && make \
  +    && make install \
  +    && rm -rf /tmp/yaml* \    
       ## webgrind (xdebug profile analyzer)
       && mkdir -p /code \
       && cd /code \
  
positive.code:     org.label-schema.vcs-type="Git" \
      org.label-schema.vcs-url="https://github.com/smizy/docker-php"
  
  ENV PHP_MAJOR_VERSION  ${VERSION}
  ENV XDEBUG_VERSION     2.4.1
  
  RUN set -x \
      && apk --no-cache --update add \
  
negative.code:         php${PHP_MAJOR_VERSION}-zip \
          php${PHP_MAJOR_VERSION}-zlib \
          ${PHP_EXTENSION} \
          yaml \
          wget \
      && adduser -D  -g '' -s /sbin/nologin -u 1000 docker \
      ## composer
  