# extra\_hosts

添加主机名映射。使用和docker客户端 --add-host选项一样的参数。

```
 extra_hosts:
   - "somehost:162.242.195.82"
   - "otherhost:50.31.209.229"
```

上面的示例会在服务的容器内部，/etc/hosts文件中创建一条主机名和IP地址记录。

```
 162.242.195.82  somehost
 50.31.209.229   otherhost
```


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