如果不存在，Testcontainers可以为我创建docker网络吗? [英] Can Testcontainers create docker network for me if it does not exist?

问题描述

好像我需要一个网络，因为我想通过主机名引用另一个容器中的一个容器.

Looks like I need a network because I would like to reference one container by hostname from another.

我也可以使用--link，但是它已被弃用，并且很快就会消失.这就是为什么我想知道Testcontainers是否可以为我创建一个docker网络.

I could also use the --link but it is deprecated and can disappear soon. That's why I wonder if Testcontainers can create a docker network for me.

通过命令行，我只需执行docker network create bridge2，然后就可以启动这样的容器了:

With command line I would just execute docker network create bridge2 and then I can start containers like this:

docker run -it --rm --net=bridge2 --name alpine1 alpine
docker run -it --rm --net=bridge2 --name alpine2 alpine

并从alpine1容器解析nslookup alpine2.

如果我尝试使用默认的--net=bridge网络或跳过--net选项(实际上是相同的)，则按名称引用将不起作用.

If I try to use default --net=bridge network or skip --net option (which is actually the same) referencing by name will not work.

推荐答案

是的，您可以使用TestContainers创建网络.我们将尽快对其进行记录，但是它很简单:

Yes, you can create networks with TestContainers. We're going to document it soon, but it's as simple as:

首先，创建一个网络:

@Rule
public Network network = Network.newNetwork();

然后，配置您的容器以加入它:

Then, configure your containers to join it:

@Rule
public NginxContainer nginx = new NginxContainer<>()
        .withNetwork(network) // <--- Here
        .withNetworkAliases("nginx") // <--- "hostname" of this container
        .withCustomContent(contentFolder.toString());

@Rule
public BrowserWebDriverContainer chrome = new BrowserWebDriverContainer<>()
        .withNetwork(network) // <--- And here
        .withDesiredCapabilities(DesiredCapabilities.chrome());

现在Nginx容器将在Chrome中显示为" http://nginx/".

Now Nginx container will be visible to Chrome as "http://nginx/".

我们测试中的相同示例:

The same example in our tests:
https://github.com/testcontainers/testcontainers-java/blob/540f5672df90aa5233dde1dde7e8a9bc021c6e88/modules/selenium/src/test/java/org/testcontainers/junit/LinkedContainerTest.java#L27

这篇关于如果不存在，Testcontainers可以为我创建docker网络吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！