Docker 卷必须是映射，而不是字符串

Question

我有以下文件./wordpress/docker-compose.yaml：

version: '3.3'

serivces:
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    evironment:
      MYSQL_ROOT_PASSWORD: password
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress

  wordpress:
    depends_on:
      - db
    image: wordpress:latest
    ports:
      - "8000:80"
    volumes:
      - ./:/var/www/html
    restart: always
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress

volumes:
  db_data

当我运行时cd ./wordpress && docker-compose up -d，出现以下错误：

ERROR: In file './docker-compose.yaml', volume must be a mapping, not a string.

谁能告诉我我做错了什么？

Answer 1

首先有某些拼写错误，例如serivces, evironment。他们应该拼写services和environment。同样对于“...不是字符串”错误，只需在卷名后附加“：”，如下所示

volumes: db_data: