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Docker Container 无法访问 localhost 端口 4444。为什么？

我容器化了一个应用程序，它是自动化 Selenium 测试的测试驱动程序。Selenium 服务器（也称为 Selenium Hub）在另一个容器以及 Firefox 节点中运行，位于 localhost:4444 下。但我的应用程序无法访问它： 

Build info: version: 'unknown', revision: 'unknown', time: 'unknown'
System info: host: '10d3b5fd1010', ip: '172.17.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.16.0-4-amd64', java.version: '1.8.0_11            1'
Driver info: driver.version: RemoteWebDriver
        at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:665)
        at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:249)
        at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:131)
        at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:158)
        at de.services.impl.TestSetupFactory.getWebDriver(TestSetupFactory.java:408)
        at de.services.impl.TestSetupFactory.getSeleniumService(TestSetupFactory.java:279)
        at de.services.impl.AutomationServiceImpl.executeTests(AutomationServiceImpl.java:220)
        at de.start.Start.main(Start.java:25)
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:4444 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: C            onnection refused (Connection refused)
        at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:158)
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
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我通过 docker-compose 启动了这些容器：

version: '2'
services:
  hub:
    image: selgrid:1.1 …
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networking selenium communication vagrant docker

Tim*_*imo
2017 08-09
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