Docker 正在更改文件所有权和权限，为什么？

Question

我有以下 docker-compose.yml 文件：

version: '2'
services:
  php-fpm:
    container_name: "php71-fpm-nginx"
    build: php-fpm
    ports:
        - 8080:80
        - 9002:9002
    environment:
        PHP_ERROR_REPORTING: 'E_ALL & ~E_DEPRECATED & ~E_NOTICE'
        STATUS_PAGE_ALLOWED_IP: '127.0.0.1'
    volumes:
        - ~/dev:/data/www
    links:
        - db
  db:
    container_name: "db_mysql"
    image: mysql
    environment:
        MYSQL_ROOT_PASSWORD: '1qazxsw2'
        MYSQL_DATABASE: 'nortwind'
        MYSQL_USER: 'db_user'
        MYSQL_PASSWORD: '1qazxsw2'
    volumes:
        - ./dev/northwindSQL:/docker-entrypoint-initdb.d
        - ~/data/db:/var/lib/mysql
  elk:
    container_name: "elk"
    image: willdurand/elk
    ports:
        - 81:80
    volumes:
        - ./elk/logstash:/etc/logstash
        - ./elk/logstash/patterns:/opt/logstash/patterns
    volumes_from:
        - php-fpm

一切正常，但是一旦我运行命令 docker-compose up -d --build 并且容器启动 ~/dev 主机中的所有权和权限，就会更新如下：

$ ls -la ~/dev/
total 96
drwxrwxr-x  11     80     80 4096 Dec 15 14:36 .
drwx------. 40 rperez rperez 4096 Dec 15 14:26 ..
drwxr-xr-x   5     80     80 4096 Mar 13  2015 css
-rw-r--r--   1     80     80  189 Mar 10  2016 DEMO_NOTES.TXT

这是预期的行为吗？这是来自 Dockerfile 的东西？有什么想法吗？

Answer 1

volumes take the ownership of whatever is already at the path in the container. If the location in the container is owned by root, then the volume will get root. If the location in the container is owned by something else, the volume will get that.

Docker 正在更改文件所有权和权限，为什么？

Docker is changing files ownership and permission, why?

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