learning-docker/notes/1_installing_docker.md

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# Installing Docker
## Setting up Docker
* Docker needs a Linux server to manage
* Some people using Linux VM to run docker
* Docker helps run this Linux VM as shown below
![Docker manage Linux VM](imgs/docker_manage_LinuxVM.png)
Where
* "Program named Docker" is a client program
* "Docker" including LinuxVM is server program
Simplest running docker container: `docker run hello-world`
## Docker Desktop
As I'm working on Ubuntu, docker desktop (only for Windows and Mac) is no need. As docker is just another program on linux
`docker info` tell's general information about the docker server program