Visual inspection: One is Docker in Docker for Mac when you install it, and the other is Docker in Docker Machine. Because docker-CLI comes from Docker for Mac, the default connection is Docker on Docker for Mac, and the connection configuration of docker-CLI should be overwritten after Docker Machine is started. The guess is this.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Visual inspection: One is Docker in Docker for Mac when you install it, and the other is Docker in Docker Machine. Because docker-CLI comes from Docker for Mac, the default connection is Docker on Docker for Mac, and the connection configuration of docker-CLI should be overwritten after Docker Machine is started. The guess is this.