Basic Commands:

• Check Version of Docker

Command:

docker --version OR docker -v

• download image

Command:

docker pull image_name

Example:

docker pull nginx

• Listing images

Command:

docker images

• Listing Containers

Command:

docker container ls OR  docker ps

Run a new Container

• Start a new container from image

Command:

docker run image

Example:

docker run nginx

• Assign it a name

Command:

docker run --name CONTAINER IMAGE

Example:

docker run --name agitated_swartz nginx

• Mapping a port to container image

Command:

docker run -p HOSTPORT:CONTAINERPORT IMAGE

Example:

docker run -p 8080:80 nginx

• Start container in the background

Command:

docker run -d IMAGE

Example:

docker run -d nginx

Manage Containers

• Show a list of running containers

docker ps

• Show a list of all containers

docker ps -a

• Delete a container

Command:

docker rm CONTAINER

Example:

docker rm web

• Delete stopped containers

docker container prune

• Create an image out of container

Command:

docker commit container

Example:

docker commit agitated_swartz1

• Rename a container

Command:

docker rename old_name new_name

Example:

docker rename agitated_swartz web

• Start a shell inside a running container

Command:

docker exec -it container executable

Example:

docker exec -it web bash

Manage Images

• Download an image

Command:

docker pull image[:tag]

Example:

docker pull nginx

• Upload an image to a repository

Command:

docker push image

Example:

docker push myimage:1.0

• Delete an image

Command:

docker rmi image

Example:

docker rmi nginx

• Show a list of all images

docker images

• Delete all unused images

Command:

docker image prune -a

• Delete dangling images

Command:

docker image prune

• Build an image from a docker file

Command:

docker build DIRECTORY OR docker build

• Tag an image

Command:

docker tag image NEW_IMAGE

Example:

docker tag Ubuntu Ubuntu:20.04

Save an image to Tar File

Command:

docker save image > File

Example:

docker save nginx > nginx.tar

• Load an image from a tar file

Command:

docker load -i TARFILE

Example:

docker load -i nginx.tar

Info & Stats

• Show the logs of a container

Command:

docker logs container

Example:

docker logs web

• Show stats of a running container

Command:

docker stats

• Show processes of container

Command:

docker top CONTAINER

Example:

docker top web

• Get detailed info about an object

Command:

docker INSPECT name

Example:

docker inspect nginx

• Show all modified files in Container

Command:

docker diff container

Example:

docker diff web

• Show mapped ports of a container

Command:

 docker port CONTAINER

Example:

docker port web