common-build.yaml

name: Reusable Build workflow

on:
  workflow_call:
    inputs:
      function: 
        description: "KRM Function name"
        required: true
        type: string
      image_name: 
        description: "Docker image name"
        required: false
        type: string
        default: "infra/krm-functions"
    secrets:
      service_account_key:
        description: "GCP Service Account Key"
        required: true
      project_id:
        description: "GCP Project ID"
        required: true
      git_token:
        description: "Git PAT for authentication"
        required: true

jobs:
  build:
    name: docker build and push
    runs-on: ['self-hosted', 'kubernetes', 'staging']
    steps:
      - name: checkout
        uses: actions/checkout@v2

      # Generating the Docker Image Tag
      # gcr.io/beecash-prod/infra/krm-functions/jobs:latest
      - name: Docker Image Tag creation
        id: image_tag
        shell: bash
        run: |
          GCR_PROJECT_ID=${{ secrets.project_id }}
          IMAGE="gcr.io/$GCR_PROJECT_ID/${{ inputs.image_name }}/${{ inputs.function }}"
          BRANCH="${GITHUB_REF#refs/heads/}"
          SHA="$(git rev-parse --short HEAD)"
          IMAGE_TAG_FULL="$IMAGE:$BRANCH-$SHA"
          echo "IMAGE=$IMAGE" >> $GITHUB_OUTPUT
          echo "IMAGE_TAG_FULL=$IMAGE_TAG_FULL" >> $GITHUB_OUTPUT
          echo ":whale2: Image Tag: ${IMAGE_TAG_FULL} " >> $GITHUB_STEP_SUMMARY

      # Login to GCR
      - name: docker login
        uses: "lagren/docker-gcr-action@master"
        with:
          SERVICE_ACCOUNT_KEY: ${{ secrets.service_account_key }}
          HOST: "gcr.io"
          
      # Build and push to GCR
      - uses: docker/setup-buildx-action@v1.5.1
        with:
          driver: docker

      - name: docker publish image
        uses: docker/build-push-action@v2.6.1
        with:
          context: .
          file: ./Dockerfile
          build-args: FUNCTION=${{ inputs.function }}
          push: true
          tags: ${{ steps.image_tag.outputs.IMAGE_TAG_FULL }}

      # release krm function to the services
      - name: release krm function script
        if: success()
        uses: addnab/docker-run-action@v3
        with:
            image: gcr.io/beecash-prod/infra/krm-functions/krm-release:latest
            options: -e FUNCTION_NAME=${{ inputs.function }} -e NEW_TAG=${{ steps.image_tag.outputs.IMAGE_TAG_FULL }} -e GIT_TOKEN=${{ secrets.git_token }}