How docker implements file migration operations between the host and the container

The specific file migration operations are as follows:

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1. Copy from the host machine File into the container

The container name is testCentos. Now you need to copy the host/home/test.txt file to the /dockerHome/path in the container

docker cp /home/test.txt testCentos：/dockerHome/

2. From Copy files from the container to the host

Assume that the container is named testCentos, and the path of the file to be copied from the container is: /dockerHome/test.txt. Now we need to copy test.txt from the container to the host. Below the /home/ path

docker cp testCentos：/dockerHome/test.txt /home/

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