How to check if docker has been installed in linux

Install Docker:

sudo yum install <FQPN>  # 例如：sudo yum install docker-ce-18.03.1.ce

Verify whether the installation is successful under Linux (there are two parts, client and service, indicating that the docker installation and startup are successful) (recommended learning: Linux video tutorial)

docker version

For more related tutorials, please pay attention to the docker tutorial column on the PHP Chinese website.

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