When Docker is installed by default, the /var/lib/docker/ directory will be used as the storage directory to store the pulled images and created containers, etc.
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By default, each macvlan can communicate with each other, but cannot communicate with the host! ! The reason for this is that intercommunication is prohibited for security. For example, the host machine pings the ip of the container. Although they belong to the same network segment, they cannot be pinged, and vice versa.
First register your own dockerhub account, register address: https://hub.docker.com 2. Log in to your account on the linux server: docker login --username=sziiit
How to set up a global proxy for Docker containers. By setting a global proxy in the Docker container, the application in the container can obtain network resources through the proxy