Guide to simple commands to use the docker

• start docker in a centOS/Linux machine

sudo service docker start

• make sure dicker is up an running

docker info

• list the docker images saved on the machine

docker images

• remove an image (e.g. old and unused version, they can be of huge size)

docker rmi [--force] 'IMAGE_ID' 

• retrieve a docker image form the docker hub

docker pull poldracklab/fmriprep:20.1.2

• show running containers

docker ps

• enter a running image

docker exec -it CONTAINER_ID bash

• stop a running image

docker stop CONTAINER_ID