prebuild.yml

name: Prebuild Database Images

on:
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2

    - name: Log in to GitHub Container Registry
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Calculate SHA256 for postgres_primary.dockerfile
      id: primary_sha
      run: echo "::set-output name=sha256::$(sha256sum postgres_primary.dockerfile | awk '{ print substr($1, 1, 12) }')"

    - name: Calculate SHA256 for postgres_replica.dockerfile
      id: replica_sha
      run: echo "::set-output name=sha256::$(sha256sum postgres_replica.dockerfile | awk '{ print substr($1, 1, 12) }')"

    - name: Build and tag primary Docker image
      run: docker build -f postgres_primary.dockerfile -t ghcr.io/${{ github.repository }}/postgres_primary:${{ steps.primary_sha.outputs.sha256 }} .

    - name: Build and tag replica Docker image
      run: docker build -f postgres_replica.dockerfile -t ghcr.io/${{ github.repository }}/postgres_replica:${{ steps.replica_sha.outputs.sha256 }} .

    - name: Lowercase container registry name
      run: echo "::set-env name=CR_NAME::$(echo ghcr.io/${{ github.repository }} | tr '[:upper:]' '[:lower:]')"

    - name: Push primary Docker image
      run: docker push $CR_NAME/postgres_primary:${{ steps.primary_sha.outputs.sha256 }}

    - name: Push replica Docker image
      run: docker push $CR_NAME/postgres_replica:${{ steps.replica_sha.outputs.sha256 }}