Docker Cheatsheet

@your_own_risk

LIST CONTAINERS

docker ps -l

CONNECT TO EXISTING CONTAINER INSTANCE

docker attach <CONTAINERID/NAME> #by ID

OPEN NEW BASH PROMPT ON RUNNING CONTAINER

docker exec -i -t <CONTAINERID/NAME> bash

FIND OUT CONTAINER ID BY USING

docker ps -l 

COMMIT CONTAINER TO MAKE IMAGE

docker commit <CONTAINER ID>

TAG THE IMAGE

docker tag <ImageName> RepoName:Tagdocker 

PULL IMAGE FROM REGISTRY

docker pull <REGISTRY>/<IMAGENAME>

PUSH IMAGE TO REGISTRY

docker push <REGISTRY>/<IMAGENAME>

SAVE IMAGE TO DISK

docker save -o <save image to path> <image name>

LOAD SAVED IMAGE FROM DISK

docker load -i <path to image tar file>

DELETE ALL UNTAGGED IMAGES

docker rmi $(docker images | grep "<none>" | awk '{print $3}')
sudo docker rmi $(sudo docker images | grep "<none>" | awk '{print $3}')
sudo docker stop $(sudo docker ps |  grep automodo | awk '{print $1}')

DELETE ALL IMAGES(LOCAL)

docker rmi $(docker images -q)

DELETE ALL CONTAINERS (LOCAL)

docker rm $(docker ps -a -q)

DELETE EXITED CONTAINERS

sudo docker ps -a | grep 'weeks ago' | awk '{print $1}' | xargs --no-run-if-empty sudo docker rm
sudo docker ps -a | grep 'days ago' | awk '{print $1}' | xargs --no-run-if-empty sudo docker rm
sudo docker ps -a | grep 'Exited' | awk '{print $1}' | xargs --no-run-if-empty sudo docker rm
sudo docker ps -a | grep 'Dead' | awk '{print $1}' | xargs --no-run-if-empty sudo docker rm

STOPPING ALL DEAD CONTAINERS

sudo docker ps -a | grep 'Dead' | awk '{print $1}' | xargs --no-run-if-empty sudo docker stop
sudo docker ps -a | awk '{print $1}' | xargs --no-run-if-empty sudo docker stop

GET DOCKER CONTAINER IP

docker inspect --format '{{ .NetworkSettings.IPAddress }}' <CONTAINER ID>

COPY FILES FROM DOCKER CONTAINER TO HOST (AND BACK)

docker cp <containerId>:/file/path/within/container /host/path/target
docker cp <containerId>:/file/path/within/container /host/path/target

DOCKERFILE

WHEN DOCKERFILE IS IN CURRENT FOLDER

sudo docker build -t <TAG> .