使用一个命令复制多个目录
有没有一种方法可以在一个命令中复制多个目录以减少层数？例如，而不是：
Is there any way to copy multiple directories in one command, to reduce the number of layers? E.g., instead of:
COPY dirone ./dirone
COPY dirtwo ./dirtwo
COPY dirthree ./dirthree
我想这样做：
COPY dirone/ dirtwo/ dirthree/ ./
这会复制目录的内容 ...但是我想复制目录本身的 。
However, this copies the contents of the directories... but I want to copy the directories themselves.
这是复制命令的记录行为：
That's the documented behavior of the copy command:
如果
< src>是目录，将复制目录的整个内容，包括文件系统元数据。
If
<src>is a directory, the entire contents of the directory are copied, including filesystem metadata.
注意：目录本身不会被复制，只是被复制内容。
Note: The directory itself is not copied, just its contents.
最好的解决方法是建议您更改构建文件夹中的目录布局，将三个文件夹移动到一个父文件夹下，添加父项。
Best workaround I can suggest is to change your directory layout in your build folder, move the three folders under one parent folder and add the parent.