create a pipeline in bitbucket for building flutter (Android) app

Question

I am very new to CI/CD pipeline. I am seeking some help. I want to create a pipeline in bitbucket for building flutter (Android) app easily. That will handle several things:

• include Chrome driver using docker run by having separate name
• run this separately in another docker image
  • by using same cirrusci/flutter image that is used for whole job
  • mount the code directly inside the container with -v ${PWD}:/build/ (i.e. this one uses now container directory /build/. but this can be anything)
  • use -w /build/ to specify working directory for the command that is run inside docker
  • using --network=container:chromedriver to share all networking between chromedriver and flutter container
  • command fiven in the end of docker run command will be flutter drive

currently, I am using the following configuration:

#Build configuration for installer-admin-application

image: cirrusci/flutter:stable
options:
  docker: true
pipelines:
  branches:
    test_test:
      - step:
          name: run test
          script:
            #- flutter test
            #- docker run --name chromedriver -d --network host -e CHROMEDRIVER_WHITELISTED_IPS='' robcherry/docker-chromedriver:latest 
            - docker run --name chromedriver -d robcherry/docker-chromedriver:latest
            - docker run --name flutter_ws -d cirrusci/flutter:stable --network=container:chromedriver 
            - flutter drive -v --driver=test_driver/app.dart --target=test_driver/app_test.dart -d web-server -web-port=49430
      - step:
          name: build app
          script:
            - flutter build web

But I am not sure how can I achieve the above specifications. Any suggestion or help please?