当我运行docker-compose build&& docker-compose up redis,在docker-compose.yaml中指定的环境和Dockerfile中的RUN env,我设置的环境变量不会被打印.

为什么这不起作用？

我正在使用docker-compose版本1.4.2.

以下是相关文件：

docker-compose.yaml与环境作为KEY =值对的列表：

redis:
    build: ../storage/redis
    ports:
      - "6379:6379"
    environment:
      - FOO='bar'

docker-compose.yaml,环境为字典：

redis:
    build: ../storage/redis
    ports:
      - "6379:6379"
    environment:
      - FOO: 'bar'

Dockerfile：

FROM redis:2.6
MAINTAINER me@email.com

RUN mkdir -p /var/redis && chown -R redis:redis /var/redis

RUN echo '-------------- env ---------------'
RUN env

COPY redis.conf /usr/local/etc/redis/redis.conf
EXPOSE 6379
ENTRYPOINT ["redis-server","/usr/local/etc/redis/redis.conf"]