Install Docker on Ubuntu 20.04

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Category : ubuntu


There are of course a lot of instructions to do this but I thought I would place the way that I do it for anyone else you may be interested.

sudo apt install docker.io
sudo groupadd docker
sudo usermod -aG docker $USER

Restart the shell, if you are using ubuntu GUI then you will need to logout and log back in.

To test that it is working run the following command:

docker run hello-world

If this works you should see output similar to the following:

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
2db29710123e: Pull complete
Digest: sha256:97a379f4f88575512824f3b352bc03cd75e239179eea0fecc38e597b2209f49a
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/

For more examples and ideas, visit:
https://docs.docker.com/get-started/

About Michael Ransley
Michael Ransley

Hi, I am a Husband, Father of 3 children and Principal Data Engineer at Origin Energy. I am interested in many things - but technology is certainly one of them - both how to solve particular issues but also the effects that technology has on our society.

Website : https://michael.ransley.co

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