docker compose build 上的 Dockerfile 传递环境 [英] Dockerfile pass environments on docker compose build

问题描述

我写了一个 Dockerfile 它使用两个参数:

I have written a Dockerfile which uses two arguments:

FROM jessie
MAINTAINER Zeinab Abbasimazar
#Build Arguments
ARG REP_USER
ARG REP_PASS
# Build
RUN echo 'REP_USER:'$REP_USER', REP_PASS:'$REP_PASS

我写了一个 docker-compose.yml 用于构建:

I wrote a docker-compose.yml for build:

version: "2"
services:
  ui:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        REP_USER: $REP_USER
        REP_PASS: $REP_PASS

我不想直接在 compose 文件中定义这些参数，所以我尝试在 docker compose build 期间发送它们:

I don't want to define these arguments directly in the compose file, so I tried to send them during docker compose build:

REP_USER=myusername REP_PASS=mypassword docker-compose build

这没有用.我更改了我的 Dockerfile 以使用这些参数作为环境变量；所以我删除了 ARG 行:

Which didn't work. I changed my Dockerfile to use these arguments as environment variables; so I removed ARG lines:

FROM jessie
MAINTAINER Zeinab Abbasimazar
# Build
RUN echo 'REP_USER:'$REP_USER', REP_PASS:'$REP_PASS

和docker-compose.yml:

version: "2"
  services:
    ui:
      build:
        context: .
        dockerfile: Dockerfile

然后运行REP_USER=myusername REP_PASS=mypassword docker-compose build;还是没有结果.

And ran REP_USER=myusername REP_PASS=mypassword docker-compose build; still no result.

我也尝试将这些信息保存到 env 文件中:

I also tried to save these information into an env file:

version: "2"
services:
  ui:
    build:
      context: .
      dockerfile: Dockerfile
    env_file:
      - myenv.env

但似乎 env 文件在构建时没有影响；它们只是参与运行时.

But it seems env files doesn't affect at build time; they are just take part into run time.

编辑 1:

Docker 版本是 1.12.6，它不支持使用 --build-arg 传递参数.

Docker version is 1.12.6 which doesn't support passing arguments with --build-arg.

编辑 2:

我尝试使用 .env 文件，如这里:

I tried using .env file as described here:

cat .env 
REP_USER=myusername
REP_PASS=mypassword

然后我调用 docker-compose config 返回:

networks: {}
services:
  ui:
    build:
      args:
        REP_PASS: mypassword
        REP_USER: myusername
      context: /home/zeinab/Workspace/ZiZi-Docker/Test/test-exec-1
      dockerfile: Dockerfile
version: '2.0'
volumes: {}

这意味着这解决了我的问题.

Which means this resolved my issue.

编辑 3:

我还在我的文章中尝试了 docker-compose arg 文档的第三部分docker-compose.yml 文件:

I also tried third section of docker-compose arg documentation in my docker-compose.yml file:

version: "2"
services:
  ui:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        - REP_USER
        - REP_PASS

并执行:

export REP_USER=myusername;export REP_PASS=mypassword;sudo docker-compose build --no-cache

仍然没有得到我想要的.

Still not getting what I wanted.

推荐答案

我终于找到了解决方案.我在问题中也提到过.我首先尝试失败，然后我发现我在命名 .env 文件时有一个错字；它是 .evn.

I finally found the solution. I mentioned it in the question too. I first tried it with fail, then I found out that I had a typo naming .env file; it was .evn.

我尝试使用 .env 文件，如此处:

I tried using .env file as described here:

cat .env 
REP_USER=myusername
REP_PASS=mypassword

然后我调用 docker-compose config 返回:

networks: {}
services:
  ui:
    build:
      args:
        REP_PASS: mypassword
        REP_USER: myusername
      context: /home/zeinab/Workspace/ZiZi-Docker/Test/test-exec-1
      dockerfile: Dockerfile
version: '2.0'
volumes: {}

这意味着这解决了我的问题.我应该提到 这个答案真的很有帮助.

Which means this resolved my issue. I should mention that this answer was really helpful.

这篇关于docker compose build 上的 Dockerfile 传递环境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！