Docker Installation and Basic Commands on AWS EC2 Instance

Docker has revolutionized the way applications are deployed and managed by providing a lightweight and efficient solution for containerization. In this blog, we'll guide you through installing Docker on an AWS EC2 instance and cover some basic commands for managing Docker images and containers.

Installing Docker on AWS EC2

Follow these steps to install Docker on your AWS EC2 instance:

Step 1: Connect to your EC2 Instance

1. Open your terminal.

2. Use the following command to connect to your EC2 instssh -i /path/to/your/key.pem ec2-user@your-instance-ip

Step 2: Update the Package Index

Run the following command to update the package index on your EC2 instant

sudo yum update -y

Step 3: Install Docker

1. Install the required packages to set up the Docker repository:

    sudo yum install -y docker
   

Start the Docker service and enable it to start on boot:

1.   sudo systemctl start docker
     sudo systemctl enable docker
   

Step 4: Test Docker Installation

1. Check the Docker version to ensure it's installed correctly:

    docker --version
   

Run a simple "Hello World" container to verify Docker is working:

1.   docker run hello-world
   

Basic Docker Commands

Now that Docker is installed, let's explore some basic Docker commands to work with images and containers:

1. Pulling Docker Images

To pull a Docker image from Docker Hub, use the following command:

docker pull image-name:tag

Replace image-name with the name of the image and tag with the desired version tag.

2. Listing Docker Images

To list all the Docker images on your system, execute:

docker images

3. Running a Docker Container

To run a Docker container from an image, use the following command:

docker run -d --name container-name image-name:tag

Replace container-name with your desired container name and provide the appropriate image-name:tag.

4. Listing Running Containers

To see the list of running containers, use:

docker ps

5. Stopping a Container

To stop a running container, run:

docker stop container-name/container-id

6. Removing a Container

To remove a stopped container, use:

docker rm container-name/container-id

7. Executing Commands in a Container

You can execute commands inside a running container:

edocker exec -it container-name/container-id command

8. Removing an Image

To remove a Docker image, execute:

docker rmi image-name:tag

9. Building a Docker Image If you have a Dockerfile, you can build an image using:

docker build -t image-name:tag /path/to/Dockerfile-directory

Docker simplifies the process of managing applications and their dependencies, allowing for consistent deployments across various environments. With these installation and basic command instructions, you're now ready to explore Docker's capabilities on your AWS EC2 instance.