Do not expose redis or payjoin directory ports in docker compose (payjoin#634)

All redis traffic is routed through the internal docker network and
not exposed to the host environment

Author: DanGould

payjoin-directory/docker-compose.yml

@@ -29,25 +29,20 @@ services:
       RUST_LOG: "trace"
       PJ_DB_HOST: "redis:6379"
       PJ_DIR_PORT: "8080"
-    ports:
-      - "8080:8080"
     depends_on:
       - redis
     networks:
       - payjoin-network
 
   redis:
     image: redis:latest
-    ports:
-      - "6379:6379"
     volumes:
       - redis-data:/data
     networks:
       - payjoin-network
 
 networks:
   payjoin-network:
-    driver: bridge
 
 volumes:
   redis-data: