Docker is a set of platform as a service products that uses OS-level virtualization to deliver software in packages called containers.

Install Link to heading

Install on Ubuntu/Debian Link to heading 

1# Install docker to the system
2sudo apt install docker.io
3
4# Setup autostart for service and start it
5sudo systemctl start docker
6sudo systemctl enable docker
7
8# Add current user to the docker group"
9sudo usermod -aG docker $USER

Command line Link to heading

Download docker image Link to heading 

1docker pull <image name>

Create “my-image” docker image from the current directory Link to heading 

1build -t my-image .

Run container from an image Link to heading 

1docker run <image name>
2# run as a service
3docker run -d -p 8080:80 --restart=always --name nginx-dev nginx

Remove container Link to heading 

1docker rm <container name>

Remove image Link to heading 

1docker rmi <image name or id>

Open shell with the specoific container Link to heading 

1docker exec -it --name ubuntu bash

Show all running containers Link to heading 

1docker ps
2# all containers
3docker ps --all
4# show id only
5docker ps --quiet

Remove unused containers Link to heading 

1docker rm $(docker ps -q -f 'status=exited')

Remove unused image Link to heading 

1docker rmi -f $(docker images -f "dangling=true" -q)

Remove orphaned volumes Link to heading 

1docker volume rm $(docker volume ls -qf dangling=true)
Clean up stuff (using these

instructions) Link to heading 

1echo "Cleaning up old containers..."
2docker ps --filter status=dead --filter status=exited -aq | xargs docker rm -v 2>&1 | cat;
3echo "Cleaning up old volumes..."
4docker volume ls -qf dangling=true | xargs docker volume rm 2>&1 | cat;

Show disk usage by docker images and containers Link to heading 

1docker system df
2docker system df --verbose

Show console GUI - dockly: npm install -g dockly Link to heading 

1dockly