今天要在我的本子上搭建一個(gè) mediawiki 環(huán)境，之前的經(jīng)驗(yàn)，用 fig 去配置是最簡(jiǎn)單的了?？墒窍螺d fig 失敗，去官網(wǎng)一看才知道，fig 已經(jīng)被 compose 工具取代了。原文是這樣說(shuō)的：

Fig has been replaced by Docker Compose, and is now deprecated. The new documentation is on the Docker website.

既然如此，就去官網(wǎng)看看 compose 到底為何物。

compose 是用來(lái)在 docker 中定義和運(yùn)行復(fù)雜應(yīng)用的小工具，比如在一個(gè)文件中定義多個(gè)容器，只用一行命令就可以讓一切就緒并運(yùn)行。它的功能與我們所熟知的 fig 相似，換句話說(shuō)，compose 是 fig 的替代產(chǎn)品，fig 就這樣退出 docker 的歷史舞臺(tái)了。

然而在 github 上的 compose 有這樣的說(shuō)法：

Fig has been renamed to Docker Compose, or just Compose for short. This has several implications for you:

The command you type is now docker-compose, not fig. You should rename your fig.yml to docker-compose.yml.

看來(lái) fig 是被重命名成 compose 了，配置文件變成了 docker-compose.yml，其他都幾乎一樣。不但 fig 不能下載了，原來(lái)有 fig 工具的環(huán)境用 fig 去搭建 mediawiki 都不可用了，報(bào)錯(cuò)如下：

    fig up -d
    Creating hgserver_mediawiki_1...
    Pulling image amclain/hgweb...
    Traceback (most recent call last):
      File "<string>", line 3, in <module>
      File "/code/build/fig/out00-PYZ.pyz/fig.cli.main", line 31, in main
      File "/code/build/fig/out00-PYZ.pyz/fig.cli.docopt_command", line 21, in sys_dispatch
      File "/code/build/fig/out00-PYZ.pyz/fig.cli.command", line 28, in dispatch
      File "/code/build/fig/out00-PYZ.pyz/fig.cli.docopt_command", line 24, in dispatch
    ...
    fig.progress_stream.StreamOutputError: Get https://index.docker.io/v1/repositories/amclain/hgweb/images: dial tcp: lookup index.docker.io on 10.202.72.118:53: read udp 10.202.72.118:53: i/o timeout

如此看來(lái)，使用 compose 是必須的了。

下面說(shuō)說(shuō) compose 的用法。

1.安裝 compose

OS X 和 64 位的 Linux 用如下命令安裝。

     # curl -L https://github.com/docker/compose/releases/download/1.1.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

    #chmod +x /usr/local/bin/docker-compose

其他平臺(tái)可以像 python 包一樣安裝：

     $ sudo pip install -U docker-compose

2.命令簡(jiǎn)介

$ docker-compose 
Fast, isolated development environments using Docker.

Usage:
  docker-compose [options] [COMMAND] [ARGS...]
  docker-compose -h|--help

Options:
  --verbose                 Show more output
  --version                 Print version and exit
  -f, --file FILE           Specify an alternate compose file (default: docker-compose.yml)
  -p, --project-name NAME   Specify an alternate project name (default: directory name)

Commands:
  build     Build or rebuild services
  help      Get help on a command
  kill      Kill containers
  logs      View output from containers
  port      Print the public port for a port binding
  ps        List containers
  pull      Pulls service images
  rm        Remove stopped containers
  run       Run a one-off command
  scale     Set number of containers for a service
  start     Start services
  stop      Stop services
  restart   Restart services
  up        Create and start containers

3.compose 編寫(xiě) mediawiki 的 docker-compose.yml

首先編寫(xiě) compose 的配置文件，語(yǔ)法與 fig 類似，文件名為 docker-compose.yml，內(nèi)容如下：

    wiki2:
        image: 'nickstenning/mediawiki'
        ports:
            - "8880:80"
        links:
            - db:database
        volumes:
            - /data/wiki2:/data

    db:
        image: "mysql"
        expose:
            - "3306"
        environment:
            - MYSQL_ROOT_PASSWORD=defaultpass

4.創(chuàng)建并啟動(dòng) mediawiki

    $ docker-compose up -d

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