Add phpredis

data/Dockerfiles/php-fpm/Dockerfile

@@ -9,6 +9,9 @@ RUN apt-get update \
 RUN docker-php-ext-configure intl
 RUN docker-php-ext-install intl pdo pdo_mysql xmlrpc
 RUN pear install channel://pear.php.net/Net_IDNA2-0.1.1 Auth_SASL Net_IMAP NET_SMTP Net_IDNA2 Mail_mime
+RUN pecl install -o -f redis \
+	&& rm -rf /tmp/pear \
+	&& docker-php-ext-enable redis
 
 COPY ./docker-entrypoint.sh /