Docker Container Hosted on AWS EC2 Instance with Elastic IP Address

This README provides instructions on how to set up and run a Node.js application inside a Docker container on an AWS EC2 instance, with an Elastic IP address attached to it.

1. Create a Nodejs application

Start by developing your Node.js application. Ensure your project has a package.json file that lists all dependencies and scripts necessary to run the application. This file is crucial for Docker to install the required packages

2. Create a Docker File

Create a Dockerfile in the root directory of your project.This file is crucial for building a Docker image that packages your application and its dependencies into a container.In this repository, you will find the Dockerfile for this project.

3.Launch AWS EC2 Instance

Create a new EC2 instance and choose Amazon Linux 2 Kernel 5.10 AMI and configure the instance type and security groups. Ensure that port 80 is open for HTTP traffic.Use an existing key pair or create a new one for SSH access.

4. Install Docker on EC2 Instance

Run the following commands to install and configure Docker

sudo yum update -y
sudo amazon-linux-extras install docker
sudo service docker start
sudo usermod -a -G docker ec2-user
pwd

Create a folder to upload your project files

mkdir downloads
cd downloads

5. Upload Files to EC2 Instance

Use scp to securely copy your project files from local to the EC2 instance

scp -i "dockerKeyPair.pem" "Dockerfile" "server.js" "package.json" ec2-user@<EC2-Public-IP>:/home/ec2-user/downloads

6. Build Docker Image and Run the Container on EC2 Instance

Once the files are on the EC2 instance, build the Docker image

sudo docker build -t ec2-webapp:v1.0 -f Dockerfile .

Run the Docker container, mapping port 80 on the host to port 3000 in the container

sudo docker run -d -p 80:3000 ec2-webapp:v1.0

This will start your Node.js app in the Docker container, accessible via the EC2 instance's public IP.

7. Attach Elastic IP Address

Go to the Elastic IPs in the AWS EC2,Allocate a new Elastic IP address.And Associate the Elastic IP with your EC2 instance.After attaching the Elastic IP, your Node.js application will be accessible via the Elastic IP at port 80.