Start working with Docker
A container is an isolated environment for your code. This means that a container has no knowledge of your operating system, or your files. It runs on the environment provided to you by Docker Desktop. Containers have everything that your code needs in order to run, down to a base operating system. You can use Docker Desktop to manage and explore your containers. Official documentation.
This article - popular docker commands collection.
If you need to show subcommands list you may see Docker help. Just call "docker" command in terminal:
user@localhost:~$ docker
Usage: docker [OPTIONS] COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/home/xinit/.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
"/home/xinit/.docker/ca.pem")
--tlscert string Path to TLS certificate file (default
"/home/xinit/.docker/cert.pem")
--tlskey string Path to TLS key file (default "/home/xinit/.docker/key.pem")
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quit
Management Commands:
builder Manage builds
buildx* Docker Buildx (Docker Inc., v0.14.0)
completion Generate the autocompletion script for the specified shell
config Manage Docker configs
container Manage containers
context Manage contexts
image Manage images
manifest Manage Docker image manifests and manifest lists
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.
To get more help with docker, check out our guides at https://docs.docker.com/go/guides/
And some subcommand have its help. Run "docker images --help" for list all arguments:
user@localhost:~$ docker images --help
Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]
List images
Options:
-a, --all Show all images (default hides intermediate images)
--digests Show digests
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print images using a Go template
--no-trunc Don't truncate output
-q, --quiet Only show image IDs
Display system-wide information:
docker info
Pull image from Docker hub:
docker pull ubuntu
Image pulled, but not running.
Start downloaded image:
docker run -it --name MyLocalUbuntu ubuntu-it - interactive mode (open Ubuntu shell at once)
--name - giving name for container
ubuntu - name of image
When need leave from MyLocalUbuntu's shell press "CTRL + D" keys combination.
See list of all downloaded images with "docker images --all" command:
user@localhost:~$ docker images --all
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu latest bf3dc08bfed0 10 days ago 76.2MB
List of containers with "docker ps --all" command:
user@localhost:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6c8d4c945b2d ubuntu "/bin/bash" 3 minutes ago Exited (0) About a minute ago MyLocalUbuntu
Run container at some port:
docker run -d -p 80:8080 docker/getting-started
Here 80 - port of your host machine. 8080 - container's port.
Pausing container:
docker pause <container_id>
Unpause container:
docker unpause <container_id>
For stopping any container run:
docker container stop <container_id>
Force stop container:
docker kill <container_id>
Remove container:
docker rm <container_id>
Remove Docker image:
docker rmi <image_id>
