How to install Docker on Amazon Linux 2

To install Docker on Amazon Linux 2, you can use the following steps:

1. Update the package manager index:
   sudo yum update

2. Install the dependencies for Docker:
   sudo yum install -y yum-utils device-mapper-persistent-data lvm2
   This installs the required packages for managing Docker packages and storage drivers.

3. Add the Docker repository:
   sudo yum-config-manager --add-repo https://download.docker.com/linux/amazon/2/x86_64/stable/
   This adds the Docker repository to the package manager.

4. Install Docker:
   sudo yum install docker-ce
   This installs the Docker engine and the docker command-line utility.

5. Start the Docker daemon:
   sudo systemctl start docker
   This starts the Docker daemon, which is required to run Docker containers.

6. Enable the Docker daemon to start at boot time:
   sudo systemctl enable docker
   This ensures that the Docker daemon is automatically started when the system boots.

You can verify the installation by running the docker --version command, which should display the version of Docker that you have installed.

Docker is a containerization platform that allows you to run and manage containers. It is useful for packaging and deploying applications and their dependencies in a lightweight and portable way.

Note: These steps assume that you are using Amazon Linux 2, which uses the yum package manager and the systemctl command to manage services. If you are using a different Linux distribution, you may need to use different commands to install and configure Docker.