add redis password and improve documentation

nextcloud/docker-compose.yml

@@ -49,8 +49,8 @@ services:
     image: 'bitnami/redis:latest'
     container_name: redis
     environment:
-      - ALLOW_EMPTY_PASSWORD=yes
       - "TZ=Europe/Paris"
+    env_file: ./secrets/librezo.secrets
     networks:
       - nextcloud
 

nextcloud/secrets/librezo.secrets.example

@@ -4,3 +4,5 @@ POSTGRES_USER=nc
 POSTGRES_HOST=nextcloud-db
 username=nextcloud
 password=__COLLABORA_PASSWORD__
+REDIS_PASSWORD=__REDIS_PASSWORD__
+REDIS_HOST_PASSWORD=$REDIS_PASSWORD