docker 撰写 : Unsupported config option for services service: 'web'

Question

我正在查看 Getting Started with Docker Compose页面。

在第 3 步中，我制作了一个 docker-compose.yml 文件，如下所述:

version: '2'
services:
    web:
        build: .
        ports: 
            - "5000:5000"
        volumes: 
            - .:/code
        depends_on:
            - redis
    redis:
        image: redis

但是当我运行时:

$ docker-compose up

我收到以下错误:

Unsupported config option for services service: 'web'

我做错了什么？我无法弄清楚发生了什么。

Answer 1

由于这是谷歌搜索“docker-compose Unsupported config option for services”的第一个结果，我想补充一点，截至 2020 年，最常见的原因是缺少 version: "3" .

只需将 version: "3" 添加到 docker-compose.yml 的开头即可。

来自 docs :

There are currently three versions of the Compose file format:

1. Version 1, the legacy format. This is specified by omitting a version key at the root of the YAML.
2. Version 2.x. This is specified with a version: '2' or version: '2.1', etc., entry at the root of the YAML.
3. Version 3.x, the latest and recommended version, designed to be cross-compatible between Compose and the Docker Engine’s swarm mode. This is specified with a version: '3' or version: '3.1', etc., entry at the root of the YAML.