1. > docker volume create pg
    2. error during connect: This error may indicate that the docker daemon is not running.: Post "http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.24/volumes/create": open //./pipe/docker_engine: The system cannot find the file specified.

    【方法一】未打开docker desktop，打开这个软件即可

    【方法二】

    cd "C:\Program Files\Docker\Docker"
./DockerCli.exe -SwitchDaemon