ERROR: In file ‘./docker-compose.yml‘, the service name True must be a quoted string, i.e. ‘True‘.

docker-compose up -d启动集群时报错

[root@zuitubiao zookeeper]# docker-compose up -d
ERROR: In file './docker-compose.yml', the service name True must be a quoted string, i.e. 'True'.

找了半天才发现是复制粘贴到docker-compose.yml上少了一部分代码。
应该是这样：

version: '3.7'

services:
  zk1:
    image: zookeeper
    hostname: zk1
  ......

实际是这样:

on: '3.7'

services:
  zk1:
    image: zookeeper
    hostname: zk1
  ......