Docker Compose入门指南 [英] Docker Compose Getting Started guide

问题描述

我正在遵循Docker Compose入门指南（ https://docs.docker.com/撰写/ gettingstarted / ），而我完全遵循了该指南。我的 Dockerfile ， docker-compose.yml 以及目录中的所有其他文件与指南中显示的完全相同

I'm following the Docker Compose getting started guide (https://docs.docker.com/compose/gettingstarted/) and I've followed the guide exactly. My Dockerfile, docker-compose.yml, and all other files in the directory are exactly as they appear in the guide.

但是，当我尝试运行 docker-compose up 时，Web服务会立即退出并显示退出代码2，并显示错误消息：

However, when I attempt to run docker-compose up, the web service exits immediately with an exit code of 2, and an error message:

web_1    | python: can't open file 'app.py': [Errno 2] No such file or directory

如果自行运行，即

docker build -t composetestweb .
docker run -d -p 5000:5000 composetestweb

该网站吐出了一个错误，

The website spits out an error, but it does respond.

检查组成的容器似乎显示正确的信息：命令，装入的文件夹和工作目录都正确。

Inspecting the composed container appears to present the correct information: the command, mounted folders, and working directory are all correct.

我正在Windows 7和VirtualBox 4.3.38上使用Docker Machine。记录下来，到目前为止，我对任何其他Docker指南都没有任何疑问。

I'm using Docker Machine on Windows 7 with VirtualBox 4.3.38. For the record, I haven't had any problems with any other Docker guides up to this point.

推荐答案

最常见的原因错误的原因是使用 docker-machine 和 $ HOME 目录的项目输出。 docker-machine 只会为主目录创建Virtualbox共享文件夹，因此，如果您的项目不在该目录下，则的卷为： docker-compose 中使用的$ c>不起作用。

The most common cause of this error is using docker-machine and a project output of your $HOME directory. docker-machine will only create a Virtualbox shared folder for the home directory, so if your project is outside of that directory the volumes: used in the docker-compose will not work.

您有以下选择：

• 将项目移动到主目录下的目录


• 将另一个共享文件夹添加到virtualbox中，其中您存储项目


• 不要使用卷：，将其从 docker-compose 中删除
code>


• move the project to a directory under your home directory
• add another shared folder to virtualbox for the folder where you store your projects
• don't use volumes:, removing it from the docker-compose

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