List containers
- -a: all.
- -q: running ones with only ID numbers.
~> docker ps -a
Have a docker image
~> docker pull IMAGE[:TAG]
Browse images at https://hub.docker.com
~> docker pull ubuntu:bionic
Start a container
~> docker run [OPTIONS] IMAGE[:TAG] [COMMAND] [ARG…]
- -i Start the container in interactive mode.
- -t allocates a pseudo-tty and attaches it to the standard input
- –name gives desired a name
to prevent the container stops after exiting use -d option, runs the container at the background and prints the container ID.
~> docker run -itd –name=my_ubuntu ubuntu:bionic /bin/bash
Run a command or gets into the container with a shell
~> docker exec [OPTIONS] CONTAINER[_NAME/_ID] [ARG…]
List /var/www/ folder:
~> docker exec -it wordpress ls -hal wp-content/themes
Execute multiple commands
~>docker exec mint:latest -C “add-apt-repository ppa:git-core/ppa; apt update; apt install git -y”
List users of a WP website with WP-CLI command in a WordPress container with a WP-CLI container:
~> docker run -it –rm \
–volumes-from wordpress:latest \
–network container:wordpress:latest \
wordpress:cli user list
Start a shell in the container:
~> docker exec -it d3a45f45ad41 sh
/ # echo This is inside the container.
This is inside the container.
/ # exit
Get into a container shell (bash):
~> docker exec -it neat-beaver bash
Stop a container
–time / -t gives time to server before stopping.
~> docker stop [-t|–time[=0]] CONTAINERNAME/ID [CONTAINER…]
~> docker stop -t=15 ubuntu:bionic
Stop all containers
~> docker stop ‘docker ps -q’
Delete a container
~> docker rm [OPTIONS] CONTAINER [CONTAINER]
~> docker rm f5377666ea29
Stop before deleting, but you can force to delete with -f option
~> docker rm-f f5377666ea29
Delete all containers at once
docker stop $(docker ps -q)
docker rm (docker ps -aq)
Remove Images
List images to remove, show all:
~> docker images -a
~> docker rmi [IMAGE_NAME/IMAGE_ID]
~> docker image rm [REPO_NAME:TAG]
Remove dangling images, list first :
~> docker images -f dangling=true
~> docker image remove
Concepts
to be continued…
Container
…
System
…
Image
…
Volume
…
Network
…
Tag
…
Defter 