deploy.yaml에 관해 질문이 있습니다.

name: Deploy Frontend
on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
      - run: docker build -t jaewonhimnae/react-test -f Dockerfile.dev .
      - run: docker run -e CI=true jaewonhimnae/react-test npm test

      - name: Generate deployment package
        run: zip -r deploy.zip . -x '*.git*'

      - name: Deploy to EB
        uses: einaregilsson/beanstalk-deploy@v18
        with:  
          aws_access_key: ${{ secrets.AWS_ACCESS_KEY }}
          aws_secret_key: ${{ secrets.AWS_SECRET_KEY }}
          application_name: react-docker-gh-test
          environment_name: React-docker-gh-test-env 
          existing_bucket_name: elasticbeanstalk-ap-northeast-2-972153559337
          region: ap-northeast-2
          version_label: ${{ github.sha }}
          deployment_package: deploy.zip

코드가 이렇게 되어 있는데 run : docker build -t jaewonhimnae/react-test -f Dockerfile.dev .

1. 이 부분을 보면 Dockerfile.dev로만 build를 하는데 Dockerfile, docker-compose-yml, docker-compose-dev-yml 파일은 사용하지 않는 건가요?

2. Docker desktop에 보면 이미지가 없던데 이미지는 다른 곳에 생성, 저장되는 건가요?