name: Validate and publish container image

on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main

env:
  REGISTRY: harbor.mukan.0am.jp
  IMAGE_NAME: harbor.mukan.0am.jp/knative-func/email-to-discord

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        run: |
          git init .
          git remote add origin "https://gitea.mukan.0am.jp/${{ gitea.repository }}.git"
          git fetch --depth=1 origin "${{ gitea.sha }}"
          git checkout --detach FETCH_HEAD

      - name: Test and build runtime image
        run: |
          docker build \
            --target runtime \
            --tag "${IMAGE_NAME}:${{ gitea.sha }}" \
            --tag "${IMAGE_NAME}:latest" \
            .

      - name: Log in to Harbor
        if: gitea.event_name == 'push'
        env:
          HARBOR_USERNAME: ${{ secrets.HARBOR_USERNAME }}
          HARBOR_PASSWORD: ${{ secrets.HARBOR_PASSWORD }}
        run: |
          printf '%s' "${HARBOR_PASSWORD}" | docker login "${REGISTRY}" \
            --username "${HARBOR_USERNAME}" \
            --password-stdin

      - name: Push runtime image
        if: gitea.event_name == 'push'
        run: |
          docker push "${IMAGE_NAME}:${{ gitea.sha }}"
          docker push "${IMAGE_NAME}:latest"