Hi, I will share some easy and common docker commands that will help you In managing Docker data in your system. These commands are the ones that are used daily. I will not mention all Commands, just the basic ones that I use mostly. So let us see.
Cleanup Docker Commands
- Image Prune
It will clear all dangling images.
sudo docker image prune
2. Volume prune
It will remove all volumes which are not in use.
sudo docker volume prune
3. Network Prune
Will remove all Networks not in use or leftover from old configurations.
sudo docker network prune
4. System Prune
Will remove all stopped containers along with the network, volume, and dangling images.
sudo docker system prune
Information Docker Commands
To check stats like Cpu Usage, memory, network and I/O usage of the containers.
sudo docker stats
To get information about a docker container, like layer images, network, storage, and more.
sudo docker inspect container_id
To check logs of the running Containers
sudo docker logs container_id
4. PS (Running containers or stopped containers)
To check the running containers, and also Stopped containers with additional flags.
// for only running containers<br>sudo docker ps<br><br>
// for running as well stopped containers<br>sudo docker ps -a
Execution and running-related Docker Commands
1. EXEC (to drop to docker shell of the running container)
It helps to drop to the shell of the docker container running, so you can execute commands for the specific container, inside the container. You just need to pass the correct shell used by docker container
sudo docker exec -it container_id bash
sudo docker exec -it container_id sh
Used to pull docker images from the container registry or your hosted registry.
sudo docker pull image_name
sudo docker pull repo_name/image_name
To run a docker container using an image you just pulled above. Additional parameters can be provided
sudo docker run image_name
To run a stopped container
sudo docker start container_id
To stop a running container
sudo docker stop container_id
To restart a running container
sudo docker restart container_id
These are the common ones, but to check all, commands type below command
sudo docker --help
balvinder@balvinder-Inspiron-5575:~$ sudo docker --help Usage: docker [OPTIONS] COMMAND A self-sufficient runtime for containers Options: --config string Location of client config files (default "/root/.docker") -c, --context string Name of the context to use to connect to the daemon (overrides DOCKER_HOST env var and default context set with "docker context use") -D, --debug Enable debug mode -H, --host list Daemon socket(s) to connect to -l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info") --tls Use TLS; implied by --tlsverify --tlscacert string Trust certs signed only by this CA (default "/root/.docker/ca.pem") --tlscert string Path to TLS certificate file (default "/root/.docker/cert.pem") --tlskey string Path to TLS key file (default "/root/.docker/key.pem") --tlsverify Use TLS and verify the remote -v, --version Print version information and quit Management Commands: builder Manage builds config Manage Docker configs container Manage containers<span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> context Manage contexts engine Manage the docker engine image Manage images network Manage networks node Manage Swarm nodes plugin Manage plugins secret Manage Docker secrets service Manage services stack Manage Docker stacks swarm Manage Swarm system Manage Docker trust Manage trust on Docker images volume Manage volumes Commands: attach Attach local standard input, output, and error streams to a running container build Build an image from a Dockerfile commit Create a new image from a container's changes cp Copy files/folders between a container and the local filesystem create Create a new container diff Inspect changes to files or directories on a container's filesystem events Get real time events from the server exec Run a command in a running container export Export a container's filesystem as a tar archive history Show the history of an image images List images import Import the contents from a tarball to create a filesystem image info Display system-wide information inspect Return low-level information on Docker objects kill Kill one or more running containers load Load an image from a tar archive or STDIN login Log in to a Docker registry logout Log out from a Docker registry logs Fetch the logs of a container pause Pause all processes within one or more containers port List port mappings or a specific mapping for the container ps List containers pull Pull an image or a repository from a registry push Push an image or a repository to a registry rename Rename a container restart Restart one or more containers rm Remove one or more containers rmi Remove one or more images run Run a command in a new container save Save one or more images to a tar archive (streamed to STDOUT by default) search Search the Docker Hub for images start Start one or more stopped containers stats Display a live stream of container(s) resource usage statistics stop Stop one or more running containers tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE top Display the running processes of a container unpause Unpause all processes within one or more containers update Update configuration of one or more containers version Show the Docker version information wait Block until one or more containers stop, then print their exit codes Run 'docker COMMAND --help' for more information on a command.
You can also check the official documentation here. https://docs.docker.com/
Thanks for reading the article, I hope it will Surely do help. Do let me know in the comments below. Thanks again and do keep visiting back for more updates.