如何防止docker-compose在服务日志中添加project_name？

Question

如何防止docker-compose在服务日志中添加project_name？

Dockerfile：

FROM alpine:3.6

CMD echo "Please don't prepend anything to this"

docker-compose.yml：

version: '3'
services:
  app:
    build:
      context: .
    image: useful-image-name

我从~/docker-playground开始 docker-compose up

记录：

Starting docker-playground_app_1 ... done
Attaching to docker-playground_app_1
app_1  | Please don't prepend anything to this
docker-playground_app_1 exited with code 0

如何关闭输出中的app_1 |？