Correct Dockerfile

Dockerfile

@@ -6,7 +6,7 @@ COPY . /var/www/html
 WORKDIR /var/www/html
 # RUN composer install --no-dev --optimize-autoloader
 RUN composer install --optimize-autoloader --ignore-platform-reqs
-RUN pecl install docker-php-ext-enable
+RUN pecl install xdebug && docker-php-ext-enable xdebug
 RUN echo 'zend_extension="/usr/local/lib/php/extensions/no-debug-non-zts-20151012/xdebug.so"' >> /usr/local/etc/php/php.ini
 RUN echo 'xdebug.remote_port=9000' >> /usr/local/etc/php/php.ini
 RUN echo 'xdebug.remote_enable=1' >> /usr/local/etc/php/php.ini