Docker Commands for Beginners

Docker is similar to VMWare Workstation and Oracle VM VirtualBox. It enables host operating system (for example, Windows) to run guest operating system(s) on top of it.

Docker requires you to enable Hyper-V on Windows 10 Pro, while VirtualBox requires you to disable Hyper-V on Windows 10 Pro, so you cannot run both virtualization technology on the same OS.

Docker is widely preferred because of its efficiency in using computer resources.

1. List all images

   docker images -a

2. Remove an image

   docker rmi 

3. List all containers

   docker ps -a

   docker container ls -a

4. Pull an image

   docker pull :

   docker pull ubuntu:latest

5. Run a container

   docker run -d -it --name  

   docker run -d -it --name myubuntu ubuntu

6. Stop a container

   docker stop 

7. Remove a container

   docker rm 

8. Attach to a running container

   docker attach 

9. Commit a container (save it as an image)

   docker commit  

10. Execute command

    docker exec  

    docker exec myubuntu bash -c "ls -aF /home; cat /etc/passwd"

11. Expose container ports to host

    docker run -it -d -p : 

    docker run -it -d -p 9100:9100 -p 9090:9090 --name mycentos centos