docker info: displays information about docker installation
docker ps : to check the running containers
docker ps -a : to check all the containers which are running and exited
docker images: to check the list of images
docker pull: to pull the image from registry
docker push: to push the created image to registry
docker stop: to stop the container
docker start: to start the stopped container
docker kill: to kill the running container unsafe
docker rmi: to remove the images
docker system prune : to remove unused containers,images
docker rm: to remove the container
docker run: to start and run a container