build&pushjob.yaml job for ci/cd pipeline for k8s using circleci & helm blog

build&pushjob.yaml

build&pushImage:
    working_directory: /go/src/hello-app (1)
    docker:
      - image: circleci/golang:1.10 (2)
    steps:
      - checkout (3)
      - run: (4)
          name: build the binary
          command: go build -o hello-app
      - setup_remote_docker: (5)
          docker_layer_caching: true
      - run: (6)
          name: Set the tag for the image, we will concatenate the app verson and circle build number with a `-` char in between
          command:  echo 'export TAG=$(cat VERSION)-$CIRCLE_BUILD_NUM' >> $BASH_ENV
      - run: (7)
          name: Build the docker image
          command: docker build . -t ${CIRCLE_PROJECT_REPONAME}:$TAG
      - run: (8)
          name: Install AWS cli
          command: export TZ=Europe/Minsk && sudo ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > sudo  /etc/timezone && sudo apt-get update && sudo apt-get install -y awscli
      - run: (9)
          name: Login to ECR
          command: $(aws ecr get-login --region $AWS_REGION | sed -e 's/-e none//g')
      - run: (10)
          name: Tag the image with ECR repo name 
          command: docker tag ${CIRCLE_PROJECT_REPONAME}:$TAG ${HELLOAPP_ECR_REPO}:$TAG    
      - run: (11)
          name: Push the image the ECR repo
          command: docker push ${HELLOAPP_ECR_REPO}:$TAG