正在将插件复制到基本wordpress镜像，插件文件夹在cmd中可见，但在卷装载中不可见

Question

将插件复制到wordpress基础图像。使用命令docker run -it --rm arslanliaqat/testwordpressimage sh，插件文件夹在cmd CMD中可见，但在卷装载的Folder中不可见。我已经附上了cmd命令的屏幕截图和文件夹。

Dockerfile

FROM wordpress:php7.1-apache

WORKDIR /var/www/html

COPY plugins/wordpress-seo/ /var/www/html/wp-content/plugins/wordpress-seo/
COPY plugins/wp-super-cache/ /var/www/html/wp-content/plugins/wp-super-cache/

EXPOSE 80

Docker-compose.yml

version: '3.3'
services:
    db:
        image: 'mysql:5.7'
        volumes:
            - './dbdata:/var/lib/mysql'
        restart: always
        environment:
            #PMA_HOST: db
            #PMA_PORT: 3000   
            MYSQL_ROOT_PASSWORD: wordpress
            MYSQL_DATABASE: wordpress
            MYSQL_USER: wordpress
            MYSQL_PASSWORD: wordpress 

    wordpress:
        depends_on:
            - db
        image: 'arslanliaqat/testwordpressimage:latest'
        #image: 'wordpress:latest'
        volumes:
            #- './wordpress/:/var/www/html/'
            - './Wordpress:/var/www/html'
            #- './wordpress:/var/www/html'
            #- './wordpress/wp-content/plugins/wordpress-seo/:/wp-content/wordpress-seo/'
            #- './wordpress/wp-content/plugins/wp-super-cache/:/wp-content/wp-super-cache/'
            # - './plugins/wordpress-seo/:/var/www/html/wp-content/plugins/wordpress-seo/'
            # - './plugins/wp-super-cache/:/var/www/html/wp-content/plugins/wp-super-cache/'
            - './docker/wordpress/php/php.ini:/usr/local/etc/php/conf.d/php.ini:ro'
        ports:
            - '8000:80'
        restart: always
        environment:
            WP_LOCALE: en_US
            WORDPRESS_LOCALE: en_US
            WORDPRESS_DB_HOST: 'db:3306'
            WORDPRESS_DB_USER: wordpress
            WORDPRESS_DB_PASSWORD: wordpress
            WORDPRESS_TABLE_PREFIX: wp_
            WORDPRESS_DEBUG: 1
            WORDPRESS_DB_NAME: wordpress
            working_dir: /var/www/html

volumes:
    db_data: 
    wordpress:

Answer 1

绑定挂载从Docker的早期就已经存在了。与卷相比，绑定装载的功能有限。使用绑定挂载时，主机上的文件或目录将挂载到容器中。

这意味着:当您在compose中定义- './Wordpress:/var/www/html'时，容器中的目录/var/www/html将被主机上的目录./Wordpress覆盖。所以你可以只看到你的主机的内容。

但对于this，您没有使用绑定挂载卷，因此容器中的内容不会被主机目录覆盖。

详细信息参考official guide