[aws-ecr] Docker image build and push separately

Hi,

I want to build an image in one job once and push it in another job rather than using build_and_push_image. It is because I am using matrix in CircleCI to push image to 10 AWS regions so if I was to use build_and_push_image with matrix, it would have built image 10 times as well which is waste of time. This is why I am aiming to split image building and pushing into two different jobs. Note: I think this is how it works with this orb but If I am misunderstanding please let me know.

Is there a way to manage this requirement using circleci/aws-ecr or do I have to do some funky manual work?

Thank you

**Old version**

version: 2.1

orbs:
  aws-ecr: circleci/aws-ecr@9.7.0

jobs:
  build-and-push:
    parameters:
      aws-region:
        type: string
    docker:
      - image: cimg/base:stable
    steps:
      - checkout
      - aws-ecr/build_and_push_image:
          repo: my-app-repo
          tag: ${CIRCLE_SHA1},latest
          region: << parameters.aws-region >>
          dockerfile: Dockerfile

workflows:
  version: 2
  build-and-push-matrix:
    jobs:
      - build-and-push:
          matrix:
            parameters:
              aws-region:
                - us-east-1
                - us-west-2
                - eu-west-1
                - ...

**Aiming for**

version: 2.1

orbs:
  aws-ecr: circleci/aws-ecr@9.7.0

jobs:
  build:
    docker:
      - image: cimg/base:stable
    steps:
      - Build here ...

  push:
    parameters:
      aws-region:
        type: string
    docker:
      - image: cimg/base:stable
    steps:
      - Push here ...

workflows:
  version: 2
  build-and-push:
    jobs:
      - build:
        ...
      - push:
          ...
          matrix:
            parameters:
              aws-region:
                - us-east-1
                - us-west-2
                - eu-west-1
                - ...