switched to postgres-backup

docker-compose.yml

@@ -10,6 +10,7 @@ services:
                     - postgresql.roundcube.internal.docker
         volumes:
             - ./data/postgresql/data:/var/lib/postgresql/data
+            - ./data/postgresql/backup:/var/lib/postgresql/backup
         ports:
             - "127.0.0.1:34010:5432"
         env_file:

postgresql/Dockerfile

@@ -1,4 +1,4 @@
-FROM postgres:9.6
+FROM robinthoni/postgres-backup:9.6
 
 RUN rm -rf /var/log/*