Install Docker on Linux

Install using your package manager

Here are some popular examples.

• Ubuntu, Debian, CentOS, Fedora:

install link

• Arch:

  sudo pacman -S docker
• Gentoo:

install link

Add user to docker group

sudo usermod -a -G docker $USER

NOTE This can be dangerous, anyone added to the docker group is root equivalent because they can use the docker run --privileged command to start containers with root privileges. Archwiki

Logout

You will need to logout for the group to update for the user

After logging back in run groups and you should see the docker group has been added to your user

Start and enable the docker service

starting the service will activate it for your current session

enabling the service will activate for all future sessions

NOTE The service will be automatically enabled for Ubuntu and Debian

sudo systemctl enable docker.service

You can use the following to check that the service is enabled:

systemctl list-unit-files --state=enabled

Testing your installation

Run docker info to confirm the docker service is running

Images to get you started

Here are some examples of what you can do with docker:

docker run -it python docker run -d -p 27017-27019:27017-27019 --name mongodb mongo docker run -it ubuntu # run cat /etc/os-release