Docker is a set of platform as a service products that use OS-Level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries, and configuration files; they can communicate with each other through well-defined channels. Because all of the containers share the services of a single operating system kernel, they use fewer resources than virtual machines.
The service has both free and premium tiers. The software that hosts the containers is called Docker Engine.
| COMMAND |
DESCRIPTION |
docker create IMAGE |
Create a new container |
docker start CONTAINER |
Start a container |
docker stop CONTAINER |
Graceful stop a container |
docker kill CONTAINER |
Kill (SIGKILL) a container |
docker restart CONTAINER |
Graceful stop and restart a container |
docker pause CONTAINER |
Suspend a container |
docker unpause CONTAINER |
Resume a container |
docker rm CONTAINER |
Destroy a container |
| COMMAND |
DESCRIPTION |
docker stop $(docker ps -q) |
To stop all the running containers |
docker stop $(docker ps -a -q) |
To stop all the stopped and running containers |
docker kill $(docker ps -q) |
To kill all the running containers |
docker kill $(docker ps -a -q) |
To kill all the stopped and running containers |
docker restart $(docker ps -q) |
To restart all running containers |
docker restart $(docker ps -a -q) |
To restart all the stopped and running containers |
docker rm $(docker ps -q) |
To destroy all running containers |
docker rm $(docker ps -a -q) |
To destroy all the stopped and running containers |
docker pause $(docker ps -q) |
To pause all running containers |
docker pause $(docker ps -a -q) |
To pause all the stopped and running containers |
docker start $(docker ps -q) |
To start all running containers |
docker start $(docker ps -a -q) |
To start all the stopped and running containers |
docker rm -vf $(docker ps -a -q) |
To delete all containers including its volumes use |
docker rmi -f $(docker images -a -q) |
To delete all the images |
docker system prune |
To delete all dangling and unused images, containers, cache and volumes |
docker system prune -a |
To delete all used and unused images |
docker system prune --volumes |
To delete all docker volumes |
| COMMAND |
DESCRIPTION |
docker run IMAGE |
Start a new container |
docker run --name CONTAINER IMAGE |
Start a new container and set a name |
docker run -p HOSTPORT:CONTAINERPORT IMAGE |
Start a new container with mapped ports |
docker run -P IMAGE |
Start a new container and map all ports |
| COMMAND |
DESCRIPTION |
docker ps |
List running containers |
docker ps -a |
List all running containers |
docker logs CONTAINER |
Show a container output |
docker logs -f CONTAINER |
Follow a container output |
docker top CONTAINER |
List the processes running in a container |
docker diff |
Show the differences with the image (modified files) |
docker inspect |
Show information of a container (json formatted) |
Commands
| COMMAND |
DESCRIPTION |
docker attach CONTAINER |
Attach to a container |
docker cp CONTAINER:PATH HOSTPATH |
Copy files from the container |
docker cp HOSTPATH CONTAINER:PATH |
Copy files into the container |
docker export CONTAINER |
Export the content of the container (tar archive) |
docker exec CONTAINER |
Run a command inside a container |
docker exec -it CONTAINER /bin/bash |
Open an interactive shell inside a container |
docker wait CONTAINER |
Wait until the container terminates and return the exit code |
| COMMAND |
DESCRIPTION |
docker images |
List all local images |
docker history IMAGE |
Show the image history |
docker inspect IMAGE |
Show information (json formatted) |
docker tag IMAGE TAG |
Tag an image |
docker commit CONTAINER IMAGE |
Create an image (from a container) |
docker import URL |
Create an image (from a tarball) |
docker rmi IMAGE |
Delete images |
docker pull REPO:[TAG] |
pull an image/repo from a registry |
docker push REPO:[TAG] |
push and image/repo to a registry |
docker search TEXT |
Search an image on the official registry |
docker login |
Login to a registry |
docker logout |
Logout from a registry |
docker save REPO:[TAG] |
Export an image/repo as a tarball |
docker load |
Load images from a tarball |
| COMMAND |
DESCRIPTION |
docker volumes |
List all volumes |
docker volume create VOLUME |
Create a volume |
docker volume inspect VOLUME |
Show information (json formatted) |
docker volume rm VOLUME |
Destroy a volume |
Backup docker data from inside container volumes and package it in a tarball archive.
docker run --rm --volumes-from CONTAINER -v $(pwd):/backup busybox tar cvfz /backup/backup.tar CONTAINERPATH
Restore the volume with a tarball archive.
docker run --rm --volumes-from CONTAINER -v $(pwd):/backup busybox bash -c "cd CONTAINERPATH && tar xvf /backup/backup.tar --strip 1"
docker run --name netshoot --rm -it nicolaka/netshoot /bin/bash
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