[redis]: Disable snapshotting completely (#463)

Signed-off-by: Shuotian Cheng <[email protected]>

Author: Shuotian Cheng

dockers/docker-database/Dockerfile.j2

@@ -24,7 +24,8 @@ debs/{{ deb }}{{' '}}
 RUN apt-get clean -y; apt-get autoclean -y; apt-get autoremove -y
 RUN rm -rf /debs
 
-RUN sed -ri 's/^daemonize yes$/daemonize no/;                                           \
+RUN sed -ri 's/^(save .*$)/# \1/g;                                                    \
+             s/^daemonize yes$/daemonize no/;                                           \
              s/^logfile .*$/logfile ""/;                                                \
              s/^# syslog-enabled no$/syslog-enabled no/;                                \
              s/^# unixsocket/unixsocket/                                                \