使用Docker Compose将文件复制到容器

问题描述：

我有一个Dockerfile，将现有目录(包含内容)复制到可以正常工作的容器中:

I have a Dockerfile where I copy an existing directory (with content) to the container which works fine:

Dockerfile

FROM php:7.0-apache
COPY Frontend/ /var/www/html/aw3somevideo/
COPY Frontend/ /var/www/html/

RUN ls -al /var/www/html
RUN chown -R www-data:www-data /var/www/html 
RUN chmod -R 755 /var/www/html

但是当我使用docker-compose.yml文件时，只有目录aw3somevideo，而在aw3somevideo内部则没有任何内容.

But when I use a docker-compose.yml file there is only the directory aw3somevideo and inside aw3somevideo there is nothing.

docker-compose.yml :

 php:
    build: php/
    volumes:
      - ./Frontend/ :/var/www/html/
      - ./Frontend/index.php :/var/www/html/
    ports:
      - 8100:80

也许我不理解volumes的功能，如果是这种情况，请告诉我如何通过docker-compose.yml文件将现有文件复制到容器中.

Maybe I do not understand the function of volumes and if that's the case please tell me how to copy my existing files to the container via a docker-compose.yml file.

答

给出

    volumes:
      - /dir/on/host:/var/www/html

如果/dir/on/host不存在，则会在主机上创建它，并将空内容装入/var/www/html的容器中.容器中/var/www/html中您之前拥有的所有内容都无法访问，直到您卸载该卷为止；否则，将无法访问该内容.新的坐骑隐藏了旧内容.

if /dir/on/host doesn't exist, it is created on the host and the empty content is mounted in the container at /var/www/html. Whatever content you had before in /var/www/html inside the container is inaccessible, until you unmount the volume; the new mount is hiding the old content.

使用Docker Compose将文件复制到容器

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