Fixed postgres volume mapping (#125)

Author: kchudy

docker-compose2.0/docker-compose.yaml

@@ -83,6 +83,6 @@ services:
       POSTGRES_USER: defguard
       POSTGRES_PASSWORD: defguard
     volumes:
-      - ./.volumes/db2.0-ha:/var/lib/postgresql/data
+      - ./.volumes/db2.0-ha:/var/lib/postgresql
     ports:
       - "5432:5432"