docker - Docker-compose扩展找不到环境变量

Question

我有一部分docker-compose文件
docker-compose.yml

  pitchjob-fpm01:
    container_name: pitchjob-fpm01     
    env_file: 
      - env/base.env 
    build:
      context: ./pitch
      dockerfile: PitchjobDockerfile
    volumes:
      - "/Sites/pitch/pitchjob/:/Sites"
    restart: always 
    depends_on:
      - memcached01
      - memcached02      
    links: 
      - memcached01
      - memcached02
    extends:
      file: "shared/common.yml"
      service: pitch-common-env  

我的扩展yml文件是
compose.yml

version: '2.0'

services:
  pitch-common-env:
    environment:
      APP_VOL_DIR: Sites
      WEB_ROOT_FOLDER: web
      CONFIG_FOLDER: app/config
      APP_NAME: sony_pitch

在pitchjob-fpm01的docker文件中，我有一个像这样的命令
PitchjobDockerfile

# Set folder groups
RUN chown -Rf www-data:www-data /$APP_VOL_DIR

但是当我运行命令调出堆栈时

docker-compose -f docker-compose-base.yml up --build --force-recreate --remove-orphans

我收到以下错误

failed to build: The command '/bin/sh -c chown -Rf www-data:www-data /$APP_VOL_DIR' returned a non-zero code: 1

我猜这是因为它没有$ APP_VOL_DIR，但是为什么这样做，如果docker compose扩展了另一个定义
环境变量

Answer 1

您可以为此使用build-time arguments。

在Dockerfile中定义:

ARG APP_VOL_DIR=app_vol_dir
# Set folder groups
RUN chown -Rf www-data:www-data /$APP_VOL_DIR

然后在docker-compose.yml中将app_vol_dir设置为build参数:

pitchjob-fpm01:
  container_name: pitchjob-fpm01     
  env_file: 
    - env/base.env 
  build:
    context: ./pitch
    dockerfile: PitchjobDockerfile
    args:
      - app_vol_dir=Sites