如何使用docker-compose v2加入默认网桥网络？ [英] How to join the default bridge network with docker-compose v2?

问题描述

我尝试设置 nginx-proxy 容器，以通过端口上的子域访问我的其他容器80个而不是特殊的端口。如您所料，我无法正常工作。

I tried to setup an nginx-proxy container to access my other containers via subdomains on port 80 instead of special ports. As you can guess, I could not get it to work.

我对docker本身还是很陌生的，发现我写<$ c更舒服$ c> docker-compose.yml 文件，这样我就不必不断编写 docker run ... 命令。我认为使用 docker 或 docker-compose 启动容器的方式没有什么不同。但是，我注意到的一个区别是，使用 docker 启动容器不会创建任何新的网络，而是使用 docker-compose 之后将有一个 xxx_default 网络。

I'm kind of new to docker itself and found that it's more comfortable for me to write docker-compose.yml files so I don't have to constantly write long docker run ... commands. I thought there's no difference in how you start the containers, either with docker or docker-compose. However, one difference I noticed is that starting the container with docker does not create any new networks, but with docker-compose there will be a xxx_default network afterwards.

我读到不同网络上的容器无法相互访问，也许这可能就是nginx-proxy无法将请求转发到其他容器的原因。但是，我无法找到一种方法来配置我的 docker-compose.yml 文件以不创建任何新网络，而是加入默认的网桥网络，例如 docker run 确实。

I read that containers on different networks cannot access each other and maybe that might be the reason why the nginx-proxy is not forwarding the requests to the other containers. However, I was unable to find a way to configure my docker-compose.yml file to not create any new networks, but instead join the default bridge network like docker run does.

我尝试了以下操作，但是导致错误，提示我无法加入这样的系统网络：

I tried the following, but it resulted in an error saying that I cannot join system networks like this:

networks:
  default:
    external:
      name: bridge

我也尝试过 network_mode：bridge ，但这似乎并没有有所不同。

I also tried network_mode: bridge, but that didn't seem to make any difference.

如何编写 docker-compose.yml 文件而不创建新文件网络，还是根本不可能？

How do I have to write the docker-compose.yml file to not create a new network, or is that not possible at all?

奖金问题： docker 和 docker-compose 我应该知道吗？

Bonus question: Are there any other differences between docker and docker-compose that I should know of?

推荐答案

添加 network_mode：桥接到您的 docker-compose.yml 中的每个服务将停止从创建网络。

Adding network_mode: bridge to each service in your docker-compose.yml will stop compose from creating a network.

如果未使用此网桥（或主机）配置任何服务，则会创建网络。

If any service is not configured with this bridge (or host), a network will be created.

经过测试并确认：

version: "2.1"

services:
  app:
    image: ubuntu:latest
    network_mode: bridge

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