Docker Use Cases

Docker Use cases

Pull docker image
Login DockerHub
Show Docker image list
Create (Run) container from image
Create (Run) container from image and Run command
Show container status
Show all docker container status
Restart exit container
Re-connect docker container
Attach Detached container
Commit and update Docker image
Save Docker image as
Delete Docker images (Local)
Delete Dangling images
Build docker image from Dockerfile
Show docker container details
Show docker container CPU info

Pull Docker image

docker pull <image>

ex)

docker pull ubuntu

Login DockerHub

docker login

Show Docker image list

docker images

Create (Run) container from image

docker run <image>

docker run ubuntu

Create (Run) container from image and Run command

docker run -it <image> <command>

docker run -it ubuntu bash

Show container status

docker ps

Show all docker container status

docker ps -a

docker ps is only active, -a contains all exit

Restart exit container

docker restart <container>

<container> is Container name or ID

docker restart xxxxx

Re-connect docker container

docker exec -it <container> bash

docker exec -it xxxxxx bash

Attach Detached container

docker attach <container>

docker attach xxxxxx

Commit and update Docker image

docker commit <container> <newimage>

docker commit xxxxx ubuntu:updated


ubuntu:updated.     ubuntu is image name,  updated is tag

Save Docker image as

docker tag <source> <target>

<source> is original docker image <target> is new name

docker tag ubuntu:updated dj110/newubuntu

dj110 is Dockerhub user ID
newubuntu is new docker repository name

By default, dst is Dockerhub, if you want to chang other repository

Push Docker image

Push Docker image to remote or local repository

docker push <images>

docker push dj110/newubuntu


By default, this is Docker hub.

Push image style is : <hostname>:<port>/<username>/<repository>:<tag>

Delete Docker images (Local)

docker rmi <image>

docker rmi dj110/neoubuntu

Delete Docker container

docker rm <container>

docker rm xxxxxx

Stop Docker container

docker stop <container>

docker stop xxxxxx

Delete Dangling images

docker system prune

Dangling images are layers that have no relationship to any tagged images (from Stackoverflow)

To use this commands, can delete multiple unused images in one command.

Build docker image from Dockerfile

docker build -t <name> <directory>

<name> is image name

<directory> is Docker context. (target directory which has Dockerfile)

docker build -t new-ubuntu:latest .

Show docker container details

docker inspect <container>

docker inspect xxxxx

Show docker container CPU info

This is above command advanced

docker inspect xxxxx | grep -i cpu