Essentials commands

Question 1

List containers

Answer 1

docker container ls

Question 2

List images running

Answer 2

docker image ls

Question 3

Pull an image

Answer 3

docker image pull

docker image pull nginx

Question 4

Return low level details from image

Answer 4

docker image inspect

Question 5

List all commands pertain to container

Answer 5

docker container -h

Question 6

Run busybox container

Answer 6

docker container run busybox

docker container run -d –name nginx –restart unless-stopped -p 8080:80 –memory 500M –memory-reservation 256M nginx

Question 7

List all containers

List currently running containers

Answer 7

docker container ls -a

docker container ls

Question 8

List container’s logs

Answer 8

docker container logs

Question 9

List statistic for a container

Answer 9

docker container stats

Question 10

Execute a command on a running container

Answer 10

docker container exec -it /bin/bash
after that you get into the shell of the container,
now you can run ls etc
exit command will not stop the container
or simply run:
docker container exec -it ls -al /usr/share/nginx/html/ to list html dir

Question 11

Pause/unpause container

Answer 11

docker container pause

docker container unpause

Question 12

Erase either stopped or running container

Answer 12

docker container rm -f

Question 13

Remove all stopped containers

Answer 13

docker container prune

Question 14

Run a container and makes this deleted after exiting

Answer 14

docker container run –rm busybox