Update wordpress

Dockerfile

 FROM hacklab/php:7-apache
 MAINTAINER Hacklab <contato@hacklab.com.br>
 
+ARG WP_VERSION=4.9.4
+COPY root/ /
+
 RUN a2enmod headers \
     && docker-php-ext-install pdo_mysql sockets \
-    && printf "yes" | pecl install memcached \
     && printf "no\n" | pecl install redis \
     && echo 'extension=redis.so' > /usr/local/etc/php/conf.d/pecl-redis.ini \
-    && echo 'extension=memcached.so' > /usr/local/etc/php/conf.d/pecl-memcached.ini \
-    && curl -s -o wp-cli.phar 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar' \
-    && chmod +x wp-cli.phar \
-    && mv wp-cli.phar /usr/local/bin/wp \
-    && wp core download --path=/var/www/html/ --version=4.9.1 --locale=pt_BR --allow-root \
+    && curl -s -o /opt/wp-cli/wp-cli.phar 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar' \
+    && wp core download --path=/var/www/html/ --version=$WP_VERSION --locale=pt_BR \
     && { \
         echo "file_uploads = On"; \
         echo "upload_max_filesize = 2048M"; \
         echo "post_max_size = 2048M"; \
         echo "max_file_uploads = 20"; \
-    } > /usr/local/etc/php/conf.d/wordpress-uploads.ini
-
-COPY docker-entrypoint.sh /entrypoint.sh
-COPY htaccess /var/www/html/.htaccess
-COPY wp-config.php /var/www/html/wp-config.php
-
-RUN chown -R www-data: /var/www/html/ \
+    } > /usr/local/etc/php/conf.d/wordpress-uploads.ini \
+    && chown -R www-data: /var/www/html/ \
     && mkdir -p /docker-entrypoint-extra \
-    && mkdir -p /var/www/html/wp-config.d \
-    && echo "alias wp='/usr/local/bin/wp --allow-root'" >> /root/.bashrc
-
-ENV PAGER /bin/cat
+    && mkdir -p /var/www/html/wp-config.d
 
 EXPOSE 80 443
 ENTRYPOINT ["/entrypoint.sh"]