docker

docker commit CONTAINER_ID IMAGE_NAME
docker history IMAGE_NAME

//save and load images to and from files
docker save -o IMAGE_TAR_FILE
docker load -i IMAGE_TAR_FILE

//docker containers usually run one process per container
//run a container and send it a command
docker run -d ubuntu /bin/bash -c "ping 8.8.8.8 -c 30"

//start a container and keep it running
docker run -d -t ubuntu 



//see top running proccesses inside a container 
docker top

//attach to a conatiner
//for shell access bash has to be pid1
docker attach CONTAINER_ID

//shell into non-bashed container
docker exec -it CONTIANER_ID bash

//exit container but leave it running
Ctrl + P + Q

//get data about your container
docker inspect