make dev fails to start because of container connection issue on ma…

…cOS (fabric8-services#1705)

remove the `network_mode` option in the containers
specify the host/port for the `auth` service to connect to its `db`, using the
internal Postgres port (5432) and using the container's hostname (the container
name itself)

Fixes fabric8-services#1705

Signed-off-by: Xavier Coulon <xcoulon@redhat.com>

docker-compose.yml

@@ -15,7 +15,6 @@ services:
       F8_DEVELOPER_MODE_ENABLED: "true"
     ports:
       - "8080:8080"
-    network_mode: "host"
     depends_on:
       - auth
   db-auth:
@@ -30,8 +29,9 @@ services:
     environment:
       AUTH_WIT_URL: "http://localhost:8080"
       AUTH_DEVELOPER_MODE_ENABLED: "true"
+      AUTH_POSTGRES_HOST: db-auth
+      AUTH_POSTGRES_PORT: 5432
     ports:
       - "8089:8089"
-    network_mode: "host"
     depends_on:
       - db-auth