remove unnecessary data volume of redis.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

docker-compose.yml

@@ -30,7 +30,6 @@ services:
             - /var/lib/mysql
             - /var/lib/postgres
             - /var/lib/mariadb
-            - /var/lib/redis
             - /var/lib/memcached
             - /var/lib/neo4j/data
 

redis/Dockerfile

@@ -2,10 +2,6 @@ FROM redis:latest
 
 MAINTAINER Mahmoud Zalt <mahmoud@zalt.me>
 
-#COPY redis.conf /usr/local/etc/redis/redis.conf
-
-VOLUME /var/lib/redis
-
 CMD [ "redis-server" ]
 
 EXPOSE 6379