Home Linux Ubuntu How to Install and Run Docker on Ubuntu 16.04

How to Install and Run Docker on Ubuntu 16.04

How to install and use docker on Ubuntu 16.04 system??

Introduction

Docker is an application which runs applications within a container. In this article, you will get to know how to install docker on ubuntu 16.04 systems.

Prerequisites

1. One Ubuntu 16.04 server set-up with sudo user access.


Read More: Install Docker and Manage on Ubuntu 18.04 system

Step 1: Remove Default Docker Packages

The first step is to remove the default docker packages from the ubuntu 16.04 system.

sudo apt-get purge docker docker-engine lxc-docker docker.io

Now install the required packages for the docker. Run the following command.

sudo apt-get install curl apt-transport-https ca-certificates software-properties-common

Step 2: Add Docker Repository

Add the GPG key to ensure download packages are valid. For this, execute the below command.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add
Add GPG Key
Add GPG Key

After that, now add the docker repository to the ubuntu 16.04 system.

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Step 3: Install Docker on Ubuntu

Finally, let’s start the docker installation on the ubuntu 16.04 system. We will instal the docker community edition. Run the following command.

sudo apt-get update
sudo apt-get install docker-ce
Install Docker on Ubuntu
Install Docker on Ubuntu

After successful installation of docker, docker service will start automatically. You can also check the docker service status using the following command.

 sudo systemctl status docker 

Step 4: How to Use a Docker on Ubuntu

To run a docker, sudo privileged is needed.

Note: it can also be run by adding a user to the docker group. Docker group is automatically created during the Docker installation.

How To Search Docker Images

By default, docker hub is used to search the images. For example, to search a ubuntu image execute the following command.

docker search ubuntu
docker search images
Docker Search Images

How To Download Docker Images

To download the docker images, pull sub-command is used. As shown in the below screenshot.

docker pull ubuntu
Download Docker Images
Download Docker Images

To check the downloaded images on the ubuntu system, run the following command.

docker images

Run Docker Container with Image

Ubuntu image is downloaded. Now it’s time to launch a docker container. Execute the below command.

docker run -it ubuntu
Run Docker Container
Run Docker Container

where -it = gives you interactive shell access.

Type Ctrl + P + Q to exit from the docker container. But it will leave container running in the background. To stop docker container type exit in the terminal.

To check all the running docker container, execute the following command.

docker ps

If you want to check all the running or stopped containers, run the below command with switch ‘a’

docker ps -a

Step 5: To start/Stop Docker Container

Run the following command to start the docker container.

docker start <container-id>
Start Docker Container
Start Docker Container

Container id = command docker ps gives you container id or name.

Execute the below command to stop a container.

docker stop <container-id>





Conclusion: You have perfectly learned how to install docker on Ubuntu 16.04 systems. In case of any doubts or feedback, kindly use the below comment box.

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