fix

docker-compose.yml

@@ -5,7 +5,7 @@ services:
     image: victorm/platoo:v1
     environment:
       user: platoo
-      host: 172.17.0.1
+      host: postgresql
       database: platoodb
       password: s3cr3t
       port: 5434
@@ -13,8 +13,6 @@ services:
       - "8080:8080"
   postgresql:
     image: postgres:9.6.18
-    ports:
-      - "5434:5432"
     environment:
       POSTGRES_USER: platoo
       POSTGRES_DB: platoodb