Step 4 − The next step is to add the new GPG key. Sudo apt-get install apt-transport-https ca-certificates It can be done with the following command. Step 3 − The next step is to install the necessary certificates that will be required to work with the Docker site later on to download the necessary Docker packages. This command will connect to the internet and download the latest system packages for Ubuntu. When we run the above command, we will get the following result − Update − The update option is used ensure that all packages are updated on the Linux system. Sudo − The sudo command is used to ensure that the command runs with root access. This method installs packages from the Internet on to the Linux system.

Step 2 − You need to update the OS with the latest packages, which can be done via the following command − When we run above command, we will get the following result −įrom the output, we can see that the Linux kernel version is 4.2.0-27 which is higher than version 3.8, so we are good to go. This method returns the following information on the Linux system −

SyntaxĪ − This is used to ensure that the system information is returned.

This method returns the system information about the Linux system. We can do this by running the following command. Docker is only designed to run on Linux kernel version 3.8 and higher. Step 1 − Before installing Docker, you first have to ensure that you have the right Linux kernel version running. To install Docker, we need to follow the steps given below. There is an OS user named demo which has been defined on the system having entire root access to the sever. The following screenshot shows a simple Ubuntu server which has been installed on Oracle Virtual Box. You can use Oracle Virtual Box to setup a virtual Linux instance, in case you don’t have it already. To start the installation of Docker, we are going to use an Ubuntu instance.

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