docker-compose 构建环境变量 [英] docker-compose build environment variable
问题描述
TL;DR : 如何在使用 docker-compose
构建图像时传递 env 变量并让 docker run image command
识别它们?
TL;DR : How can I pass env variable when building the image with docker-compose
and have docker run image command
recognize them ?
我有这个 Dockerfile :
I have this Dockerfile :
FROM mhart/alpine-node:10
ADD . /app
WORKDIR /app
RUN apk --no-cache add --virtual builds-deps build-base python &&
yarn global add nodemon &&
yarn &&
apk del builds-deps build-base python
还有这个 docker-compose.yml :
and this docker-compose.yml :
version: "3.3"
services:
api:
build:
context: .
dockerfile: Dockerfile-preprod
image: registry.git.louis-girones.fr:4567/make-your-night/back:preprod
environment:
- NODE_ENV=development
env_file:
- .env
volumes:
- .:/app
ports:
- "${PORT_PREPROD}:${PORT_PREPROD}"
command: sh -c "mkdir -p dist && touch ./dist/app.js && yarn run start"
mongo:
image: mongo:4.0
ports:
- "${MONGO_PREPROD}"
command: mongod
volumes:
- ./data:/data/db
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:6.1.1
volumes:
- ./esdata:/usr/share/elasticsearch/data
environment:
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
- discovery.type=single-node
ports:
- "9300:9300"
- "9200:9200"
volumes:
esdata:
使用这个 .env 文件(位于根文件夹中,如 docker-compose.yml 和 Dockerfile):
With this .env file (which is in the root folder, like docker-compose.yml and Dockerfile) :
#!/usr/bin/env bash
NODE_ENV=development
PORT=9000
SECRET_SESSION=superSecr3t
APP_NAME=Night Vision
API_VERSION=/api/v0/
DEFAULT_TZ=Europe/Paris
ASSETS_URI=http://localhost:9000/public/img/
BCRYPT_WORKFACTOR=1
ES_PORT=9200
ES_LOG_LEVEL=trace
以及节点服务器启动中的这段代码:
And this code in the node server startup :
// Export the config object based on the NODE_ENV
// ==============================================
const config: IConfig = commonConfig
if (commonConfig.env === 'development') {
_.merge(config, developmentConfig)
} else if (commonConfig.env === 'test') {
_.merge(config, testConfig)
} else if (commonConfig.env === 'preproduction') {
_.merge(config, preproductionConfig)
} else if (commonConfig.env === 'production') {
_.merge(config, productionConfig)
} else {
throw new Error('Please set an environment')
}
当我运行 docker-compose build
命令时,一切都很好,但是例如如果我尝试 docker run myimage yarn run test
错误请设置环境"被抛出.
When I run the docker-compose build
command, everything is fine, but for instance If I try docker run myimage yarn run test
the Error "Please set an environment" is thrown.
我希望
env_file:
- .env
使这个文件的 env 变量可以在我的图像中访问,但事实并非如此,这就是我尝试添加
makes the env variables of this file accessible in my image but that is not the case, that's why I tried to add
environment:
- NODE_ENV=development
但仍然没有成功,我还尝试在运行构建时将我的 env 变量作为命令行参数传递:
But still no success, I have also tried to pass my env variable as command line argument when I run the build :
docker-compose build --build-arg NODE_ENV=development api
但它给了我这个信息:
[Warning] One or more build-args [NODE_ENV] were not consumed
Successfully built 9b14dd5abc3f
我真的更喜欢使用第一种或第二种方法
And I would really prefer to use the first or second methods
docker 版本:18.06.1-cedocker-compose 版本:1.19.0
docker version : 18.06.1-ce docker-compose version : 1.19.0
推荐答案
有一个注释 在文档中:
注意:如果您的服务指定了构建选项,则环境中定义的变量在构建过程中不会自动可见.使用 build 的 args 子选项来定义构建时环境变量.
Note: If your service specifies a build option, variables defined in environment are not automatically visible during the build. Use the args sub-option of build to define build-time environment variables.
它也在此处描述.首先(如上所述),您需要在 Dockerfile 中指定 ARG
:
It's also described in here. First (as mentioned above), you need to specify ARG
in Dockerfile:
FROM mhart/alpine-node:10
ARG NODE_ENV
ENV NODE_ENV $NODE_ENV
ADD . /app
WORKDIR /app
RUN apk --no-cache add --virtual builds-deps build-base python &&
yarn global add nodemon &&
yarn &&
apk del builds-deps build-base python
然后编辑您的 docker-compose
文件以在构建期间包含参数,如下所示:
And then edit your docker-compose
file to include the argument during build, like so:
build:
context: .
dockerfile: Dockerfile-preprod
args:
- NODE_ENV=development
甚至
build:
context: .
dockerfile: Dockerfile-preprod
args:
- NODE_ENV=${NODE_ENV}
这篇关于docker-compose 构建环境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!