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Accepted
muturgan
Asked:2021-11-13 18:19:00 +0000 UTC2021-11-13 18:19:00 +0000 UTC

如何将环境变量从 docker-compose.yml 传递到 Dockerfile？

  • 772
Структура папок следующая:
/
  /account
    Dockerfile
  docker-compose.yml
  .env

.env 文件：

TEST=test

码头工人-compose.yml：

version: '3'

services:
  account:
    env_file:
      - .env
    build:
      context: account/src
      dockerfile: Dockerfile
      args:
        ONE: ${TEST}
        TWO: $TEST
        THREE: 3
    environment:
      - FOUR=${TEST}
      - FIVE=$TEST
      - SIX=6
    command: some command

码头文件：

FROM node:12.19.0-alpine3.11
WORKDIR /app
RUN echo ONE $ONE
RUN echo TWO $TWO
RUN echo THREE $THREE
RUN echo FOUR $FOUR
RUN echo FIVE $FIVE
RUN echo SIX $SIX

.. whatever

EXPOSE $APP_PORT
CMD ["some", "command"]

在终端我看到：

Step 3/19 : RUN echo ONE $ONE
 ---> Running in caa4cd247d5d
ONE
Removing intermediate container caa4cd247d5d
 ---> 35470ab440be
Step 4/19 : RUN echo TWO $TWO
 ---> Running in 23ac6fd171b7
TWO
Removing intermediate container 23ac6fd171b7
 ---> e45af7802515
Step 5/19 : RUN echo THREE $THREE
 ---> Running in 562ad0182074
THREE
Removing intermediate container 562ad0182074
 ---> f2e8cbe870d0
Step 6/19 : RUN echo FOUR $FOUR
 ---> Running in 9e3217e4731b
FOUR
Removing intermediate container 9e3217e4731b
 ---> d138ea278878
Step 7/19 : RUN echo FIVE $FIVE
 ---> Running in aa1be66d515c
FIVE
Removing intermediate container aa1be66d515c
 ---> 1bb0b844cd41
Step 8/19 : RUN echo SIX $SIX
 ---> Running in 53551d8861b0
SIX

同时，应用程序本身可以看到环境变量（并且看不到参数）。

如何将环境变量传递给 Dockerfile？

docker

1 个回答

  1. Best Answer

    码头文件：

    ...
ARG ONE
ENV ONE $ONE
RUN echo $ONE
...
    • 2

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