Docker is the modern platform for high-velocity innovation—a tool that is used to automate the deployment of applications in lightweight containers so that applications can work efficiently in different environments.
A few quick notes about Docker:docker-installation-on-ubuntu-article
- Multiple containers run on the same hardware
- Maintains isolated applications
- Enables high productivity
- Quick and easy to configure
Before learning about this technology, the first step is to install it. In this article, you’ll learn how to install Docker on Ubuntu.
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Steps for Installing Docker:
1. Open the terminal on Ubuntu.
2. Remove any Docker files that are running in the system, using the following command:
| $ sudo apt-get remove docker docker-engine docker.io |
After entering the above command, you will need to enter the password of the root and press enter.
3. Check if the system is up-to-date using the following command:
| $ sudo apt-get update |
4. Install Docker using the following command:
| $ sudo apt install docker.io |
You’ll then get a prompt asking you to choose between y/n - choose y
5. Install all the dependency packages using the following command:
| $ sudo snap install docker |
6. Before testing Docker, check the version installed using the following command:
| $ docker --version |
7. Pull an image from the Docker hub using the following command:
| $ sudo docker run hello-world |
Here, hello-world is the docker image present on the Docker hub.
8. Check if the docker image has been pulled and is present in your system using the following command:
| $ sudo docker images |
9. To display all the containers pulled, use the following command:
| $ sudo docker ps -a |
10. To check for containers in a running state, use the following command:
| $ sudo docker ps |
You’ve just successfully installed Docker on Ubuntu!
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