fix "named" volume

Warning: the mapping "project:/www" in the volumes config for service "nginx" is ambiguous. In a future version of Docker, it will designate a "named" volume (see moby/moby#14242). To prevent unexpected behaviour, change it to "./project:/www"

docker-compose.yml

@@ -3,8 +3,8 @@ nginx:
   links:
   - php
   volumes:
-  - project:/www
-  - docker/nginx/conf.d:/etc/nginx/conf.d
+  - ./project:/www
+  - ./docker/nginx/conf.d:/etc/nginx/conf.d
   ports:
   - "8090:80"