Docker ENV for Python变量 [英] Docker ENV for Python variables

问题描述

是python&的新手docker，我创建了一个小烧瓶应用程序（test.py），该应用程序具有两个硬编码值：

Being new to python & docker, I created a small flask app (test.py) which has two hardcoded values:

username = "test"
password = "12345"

我能够创建Docker映像并从中运行容器以下Dockerfile：

I'm able to create a Docker image and run a container from the following Dockerfile:

FROM python:3.6

RUN mkdir /code  
WORKDIR /code  
ADD . /code/  
RUN pip install -r requirements.txt  

EXPOSE 5000  
CMD ["python", "/code/test.py"]`

如何为用户名&创建ENV变量？密码并在运行容器时传递动态值？

How can I create a ENV variable for username & password and pass dynamic values while running containers?

推荐答案

在python代码中，您可以读取以下环境变量：

Within your python code you can read env variables like:

import os
username = os.environ['MY_USER']
password = os.environ['MY_PASS']
print("Running with user: %s" % username)

然后在运行容器，您可以设置以下变量：

Then when you run your container you can set these variables:

docker run -e MY_USER=test -e MY_PASS=12345 ... <image-name> ...

这将在容器内设置env变量，稍后将由python读取脚本（ test.py ）

This will set the env variable within the container and these will be later read by the python script (test.py)

有关 os.environ 和 docker env

这篇关于Docker ENV for Python变量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！