npm install
npm start

docker build -t todo-web-app .
docker run -p 3000:3000 todo-web-app

Here's a step-by-step guide using the AWS Management Console (GUI) to deploy your Dockerized To-Do application to Amazon ECS using AWS CodeBuild and AWS CodeDeploy.

1. Create an ECR Repository

   • Go to the Amazon ECR console.
   • Click Create repository.
   • Enter todo-web-app as the repository name and click Create repository.

2. Push Your Docker Image

   • Follow the instructions on the ECR repository page:
     • Open the repository you just created.
     • Click on View push commands to get the commands for pushing the image.
     • Execute the commands in your terminal to build, tag, and push the image to ECR.

1. Open the Amazon ECS console.
2. Click Create cluster.
3. Select Networking only (Fargate) and click Next step.
4. Enter todo-app-cluster as the cluster name and click Create.

1. Go to the Task Definitions page.
2. Click Create new task definition and choose Fargate.
3. Configure the task:
   • Task definition name: todo-web-app-task.
   • Task role: Leave as default.
   • Add container:
     • Name: todo-web-app-container.
     • Image: <account_id>.dkr.ecr.<region>.amazonaws.com/todo-web-app:latest.
     • Port mappings: 3000 (for container port).
4. Click Create.

1. Go to the ECS Services page.
2. Click on the todo-app-cluster and click Create service.
3. Configure the service:
   • Launch type: Fargate.
   • Service name: todo-web-app-service.
   • Task definition: Choose the one you created.
   • Number of tasks: 1.
   • VPC and subnets: Select appropriate ones.
   • Security group: Allow HTTP traffic (port 3000).
4. Click Create service.

1. Go to CodeBuild

   • Open the AWS CodeBuild console.

2. Create a Build Project

   • Click Create build project.
   • Enter todo-web-app-build as the project name.
   • In Source, choose the source provider (e.g., GitHub or CodeCommit).
   • Connect your repository where your Dockerfile and application code are stored.
   • In Environment, choose:
     • Environment image: Managed image.
     • Operating system: Amazon Linux 2.
     • Runtime: Standard.
     • Image: aws/codebuild/standard:6.0.
     • Check Enable this project to build Docker images.
   • In Buildspec, select Use a buildspec file

3. Start the Build

   • Save the project and start the build.
   • Once completed, the Docker image will be in your ECR repository.