ruby-on-rails – Docker – docker-compose’version’没有任何配置选项

我是Docker世界的新手,我度过了我的假期来学习这个码头(但它比Vagrant更难).
所以我使用Ubuntu 16.04,我成功安装了docker和docker-compose.

我读了这个教程：Quickstart: Docker Compose and Rails
但这不起作用……也许教程不好.

我有这个docker-compose.yml：

db:
    image: postgres
web:
    build: .
    command: bundle exec rails s -p 3000 -b '0.0.0.0'
    volumes:
       - .:/www/html
    ports:
       - "3000:3000"
    depends_on:
       - db

我总是得到这个错误：

$docker-compose run web rails new . --force --database=postgresql --skip-bundle
ERROR: Validation Failed in file './docker-compose.yml',reason(s):
Unsupported config option for 'web' service: 'depends_on'

嗯,好吧,我看了很多谷歌的结果,似乎我遇到了麻烦,因为我使用的是Ubuntu.不幸的是,Ubuntu中最高版本的docker只有1.5.2. (我尝试用curl下载1.7.1,但是自动安装了1.5.2.)

$docker version
Client:
 Version:      1.11.1
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   5604cbe
 Built:        Tue Apr 26 23:43:49 2016
 OS/Arch:      linux/amd64

Server:
 Version:      1.11.1
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   5604cbe
 Built:        Tue Apr 26 23:43:49 2016
 OS/Arch:      linux/amd64

你有任何想法,我怎么能运行基于rails的docker？
我无法安装docker机器,因为我使用ubuntu并且安装总是会失败.

但是我的PHP docker-compose.yml很好,因为我可以运行它：slight_smile：但这个rails教程并不好.

原因是你删除了你所遵循的示例教程的第一行,它们确实很重要.
因为,看看docker版本,你应该使用高于1.6.x的docker-compose版本.

要识别这一点,您可以运行

$docker-compose -v

在我的情况下,让我

docker-compose version 1.7.0,build 0d7bf73

如果你的版本有1.7.x或更高版本,那么下面的信息绝对适用于你.

这应该是有效的：

version: '2'   ## <- this line matter and you removed it out the tutorial
services:      ## <- this line also
    db:
        image: postgres
    web:
        build: .
        command: bundle exec rails s -p 3000 -b '0.0.0.0'
        volumes:
            - .:/www/html
        ports:
            - "3000:3000"
        depends_on:
            - db

There are currently three versions of the Compose file format:

Version 1,the legacy format. This is specified by omitting a version
key at the root of the YAML.

Version 2.x. This is specified with a version: ‘2’ or version: ‘2.1’
entry at the root of the YAML.

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.

另外,这里有一个小的docker-composeversion / Composer文件矩阵：

Compose file format | Docker Engine release
--------------------|----------------------
3.0 ; 3.1           | 1.13.0+
2.1                 | 1.12.0+
2.0                 | 1.10.0+
1.0                 | 1.9.1.+

资料来源：from docker documentation

Version 1 is supported by Compose up to 1.6.x. It will be deprecated in a future Compose release.

Version 2 files are supported by Compose 1.6.0+ and require a Docker Engine of version 1.10.0+.

An upgrade of version 2 that introduces new parameters only available with Docker Engine version 1.12.0+

An upgrade of version 2.1 that introduces new parameters only available with Docker Engine version 1.13.0+. This version also allows to specify default scale numbers inside the service’s configuration.

Designed to be cross-compatible between Compose and the Docker Engine’s swarm mode,version 3 removes several options and adds several more.

在docker文档页面上,现在还有关于如何升级Compose文件的实用指南：

> One to upgrade from 1 to 2.x
> One to upgrade from 2.x to 3.x

其他有用的docker撰写文档：

> List of all docker-compose
versions
> Compose file version
1
> Compose file version
2
> Compose file version
3 (current)

原文链接：https://www.f2er.com/docker/436449.html

ruby-on-rails – Docker – docker-compose’version’没有任何配置选项

猜你在找的Docker相关文章