Install Docker on Ubuntu 20.04 in Linux || Hello world in Docker in Ubuntu

3 min readJul 4, 2020

Dockers

Why Docker ?
What is Docker Container
Docker with ML
Why we should learn Docker

Setting up and Installing docker in Ubuntu

Step 1: Installing Docker

If you go to ubuntu installation page of docker there are multiple ways to install it the by first updating the package , importing the keys and then installing files one by one

Alternatively

First , Clean your system of any other docker files

$ sudo apt-get remove docker docker-engine docker.io containerd runc

Second , Install Docker using convenience script[link]

$ sudo apt install curl
$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh

which should take care of all the dependecies and install docker after the installation is complete you can check the version installed using the command

$ sudo docker version

and it should print something like this :

harshit95@harshit95-ThinkPad:~$ sudo docker version
Client: Docker Engine - Community
 Version:           19.03.12
 API version:       1.40
 Go version:        go1.13.10
 Git commit:        48a66213fe
 Built:             Mon Jun 22 15:45:44 2020
 OS/Arch:           linux/amd64
 Experimental:      falseServer: Docker Engine - Community
 Engine:
  Version:          19.03.12
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.10
  Git commit:       48a66213fe
  Built:            Mon Jun 22 15:44:15 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

Step 2 :

Installing a docker image from docker hub and running it

Head on to docker HUB
Find the “ hello-world” image

Now to install this “ Hello-world” docker image in you system

$ sudo docker pull hello-world

If successfull you will get message like

Using default tag: latest
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:d58e752213a51785838f9eed2b7a498ffa1cb3aa7f946dda11af39286c3db9a9
Status: Downloaded newer image for hello-world:latest
docker.io/library/hello-world:latest

Step 3:

Now to run the image

$ sudo docker run hello-world

If everything goes well you will see the following output :

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 bashShare 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/

Congrats you just run a Hello World in Docker

Reference :

Install Docker on Ubuntu 20.04 in Linux || Hello world in Docker in Ubuntu

Dockers

Setting up and Installing docker in Ubuntu

Step 2 :

Step 3:

Written by Harshit Yadav