在docker语句中翻译流浪汉语句 [英] translate vagrant statements in docker statements

问题描述

我必须在docker命令中转换一个无业游民的文件，以设置测试服务器。我没有使用docker的经验，对于以下命令，我没有找到解决方案。

I have to translate a vagrant file in docker commands for setting up a test server. I have no experiance in using docker and for the following command I found no solution.

Vagrant.configure("2") do |config|

  config.vm.network(:forwarded_port, guest: 5432, host: 5432, host_ip: "127.0.0.1")

我尝试了类似
docker network create --gateway 127.0.0.1 forwarded_port

I tried something like docker network create --gateway 127.0.0.1 forwarded_port

的方法，但是我没有找到方法设置端口，但我不确定 forwarded_port是网络的名称还是后台方法的参数。

But I found no way to set the ports and I'm not sure if "forwarded_port" is the name for my network or an argument for a method in the background.

我很感谢您的帮助

Matthias

推荐答案

该特定行看起来会导致容器/ VM中的端口转发到主机，并且应该与选项 docker完全等效。运行-p 127.0.0.1:5432:5432 （其中这三个部分匹配 host_ip ， host ，以及来自Vagrant语句的来宾）。

That specific line looks like it causes a port from the container/VM to be forwarded out to the host, and it should be exactly equivalent to the option docker run -p 127.0.0.1:5432:5432 (where those three parts match host_ip, host, and guest from your Vagrant statement).

请注意，Docker环境和典型用法可能有所不同从典型的虚拟机设置。作为此处的一个具体示例，您通常不会尝试在应用程序容器内运行PostgreSQL数据库；您将单独启动一个数据库容器并将其告诉您的应用程序。典型的仅命令行设置可能是

Note that the Docker environment and typical usage can be different from typical VM setups. As a specific example here, you wouldn't generally try to run a PostgreSQL database inside your application's container; you'd separately launch a database container and tell your application about it. A typical command-line only setup might be

docker network create mynet
docker run -p 5432:5432 --net mynet --name db postgres:9.6
docker run -p 8080:8080 --net mynet --name app -e PGHOST=db myapp:20180914

Docker Compose是启动多个可协同工作的容器的常用工具（您可以找到许多应用程序和数据库 docker-compose的示例.yml 文件（通过阅读SO问题）。

Docker Compose is a frequently used tool for launching multiple containers that work together (and you can find many many examples of app+database docker-compose.yml files by reading through SO questions).

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