docker-compose should not mount /var/lib/redis

[gnouts]

Hi, I've blindly use your docker-compose as docker should be containerized. Except I had Redis configure for other non-dockerized services. I don't know much about Redis but my other services crashed because Redis was not properly handling requests anymore. EDIT : Actually, it messed with permission on file and directory of /var/lib/redis

You should mount volume from local directory, not from system folder. I acknowledge, I should have been more careful, though it's still a best practice for docker.