Review the configurations

version: 0.2

phases:
  pre_build:
    commands:
      - echo Logging in to Amazon ECR...
      - aws --version
      - aws ecr get-login-password | docker login --username AWS --password-stdin $REPOSITORY_URI
      - COMMIT_HASH=$(echo $CODEBUILD_RESOLVED_SOURCE_VERSION | cut -c 1-7)
      - IMAGE_TAG=${COMMIT_HASH:=latest}
  build:
    commands:
      - echo Docker build and tagging started on `date`
      - docker build -t $REPOSITORY_URI:latest -t $REPOSITORY_URI:$IMAGE_TAG .
      - echo Docker build and tagging completed on `date`
  post_build:
    commands:
      - echo Build completed on `date`
      - echo Pushing the docker images...
      - docker push $REPOSITORY_URI:latest
      - docker push $REPOSITORY_URI:$IMAGE_TAG
      - echo Update the REPOSITORY_URI:IMAGE_TAG in task definition...
      - echo Container image to be used $REPOSITORY_URI:$IMAGE_TAG
      - sed -i 's@REPOSITORY_URI@'$REPOSITORY_URI'@g' taskdef.json
      - sed -i 's@IMAGE_TAG@'$IMAGE_TAG'@g' taskdef.json
      - echo update the REGION in task definition...
      - sed -i 's@AWS_REGION@'$AWS_REGION'@g' taskdef.json
      - echo update the roles in task definition...
      - sed -i 's@TASK_EXECUTION_ARN@'$TASK_EXECUTION_ARN'@g' taskdef.json
artifacts:
  files:
    - "appspec.yaml"
    - "taskdef.json"

version: 0.0
Resources:
  - TargetService:
      Type: AWS::ECS::Service
      Properties:
        TaskDefinition: "<TASK_DEFINITION>"
        LoadBalancerInfo:
          ContainerName: "nginx-sample"
          ContainerPort: 80

{
  "containerDefinitions": [
    {
      "name": "nginx-sample",
      "image": "REPOSITORY_URI:IMAGE_TAG",
      "portMappings": [
        {
          "containerPort": 80,
          "protocol": "tcp"
        }
      ],
      "essential": true,
      "dockerLabels": {
        "name": "nginx-sample"
      },
      "logConfiguration": {
        "logDriver": "awslogs",
        "options": {
          "awslogs-group": "/ecs/nginx-sample",
          "awslogs-region": "AWS_REGION",
          "awslogs-stream-prefix": "nginx-sample"
        }
      }
    }
  ],
  "taskRoleArn": "TASK_EXECUTION_ARN",
  "executionRoleArn": "TASK_EXECUTION_ARN",
  "family": "nginx-sample",
  "networkMode": "awsvpc",
  "requiresCompatibilities": [
    "FARGATE"
  ],
  "cpu": "256",
  "memory": "1024"
}