In this article, we are going to explain steps for installing Docker on Debian based Ubuntu 64 bit operating system in details. The user should have access to shell with sudo root user permission to perform installation steps.
Steps to install Docker on Ubuntu Server 18.04 LTS , 18.10 - 64bit:
For the demo purpose, I have created a AWS EC2 instance using Ubuntu Server 18.04 LTS ami-04b9e92b5572fa0d1 (64-bit x86).
Step 1: Login into the server via SSH and remove necessary preexisting packages
geeks@terminal:~$ sudo apt-get purge docker lxc-docker docker-engine docker.io
Step 2: Update the packages using apt-get utility as a sudo user
geeks@terminal:~$ sudo apt update
Step 3: Install Docker prerequisites packages using apt utility
geeks@terminal:~$ sudo apt install apt-transport-https ca-certificates curl software-properties-common
Step 4: Add the GPG key from the official Docker for Ubuntu
geeks@terminal:~$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
Step 5: Add the Docker official repository. If you’re using ARM64 instead of AMD64 replace [arch=amd64] with [arch=arm64]
geeks@terminal:~$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
The $(lsb_release -cs) provides the short code name of the distribution In this case, the code name is Bionic. This helps to map Docker repository to correct distribution and avoid any issues.
Step 6: Update the packages using apt utility as a sudo user
geeks@terminal:~$ sudo apt update
Step 7: Install Docker
geeks@terminal:~$ sudo apt install docker-ce
Step 8: Verify if Docker process has started or not
geeks@terminal:~$ sudo systemctl status docker
Step 9: To stop using sudo in every command, add your user to the Docker group.
geeks@terminal:~$ sudo usermod -aG docker geekster
In this command, the username is geekster and group name is docker. After successful execution of the command, logout and login with the user for changes to take effect.
Step 10: Verify if your user is part of Docker group or not
geeks@terminal:~$ id -nG
Step 11: Check by running any Docker command. Here, I am checking the various commands available in Docker and then executing a command to check the version of Docker installed in the operating system
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
geeks@terminal:~$ docker version
There are various ways other than specified above to install Docker on Debian based distributions as in below links:
That's all folks!