List images:

Docker images: Lists all images

Build an image from a dockerfile

docker build -t <image_name>:<tag_name> .: Create the image from the dockerfile inside of the same directory where this command was executed.

Images with the same tag will not get deleted, but they loose their tag.

run {shell} docker image pruneto delete them

Inspect image metadata:

docker image inspect <image_name>:<tag_name>

List all Docker Containers:

docker ps

Run a docker image/container

You can only run a container, an image is just instructions in how to run a container.

docker container run [OPTIONS] IMAGE [COMMAND] [ARG...]

With output:

docker run ubuntu:12.04

This runs a container. It is not possible to interact with it.

With an interactive shell:

docker run -i -t ubuntu:12.04 /bin/bash

This gives us an interactive bash shell inside of the container. We won't see logs there though.

Stop a docker container

docker stop <myContainer>

Remove a container:

Only removes stopped containers by default. To remove running containers use the -f flag.

docker rm <myContainer>

Remove all stopped containers

docker container prune

Debugging

Hard reset:

Delete all Docker images at once:

docker rmi $(docker image ls -q)

Stop and Delete all Docker Containers at once:

docker rm $(docker ps -aq)

Pause/Unpause a container

Used to temporarily free up resources, debug and troubleshoot

{shell} docker pause <myContainer>

docker unpause <myContainer>

Restart a container

After changing some configs for example

docker restart <myContainer>

Execute shell commands inside of a container

Mostly to start a shell inside of it.

docker exec -it <myContainer> bash

You exit this shell with exit

Docker compose

execute docker compose file:

docker compose up

stop all docker containers spawned via docker compose up

docker compose stop

remove all stopped docker containers that were defines via docker compose up

docker compose rm