build-hadoop-image.yaml

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name: build-hadoop-image

# This workflow builds the Hadoop docker image.
# For non-PR runs, it also pushes the image to the registry, tagging it based on the branch name.

on:
  pull_request:
    types: [opened, synchronize]
    branches:
      - 'docker-hadoop-**'
      - '!docker-hadoop-runner-**'
  push:
    branches:
      - 'docker-hadoop-**'
      - '!docker-hadoop-runner-**'

permissions:
  contents: read
  packages: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Generate image ID
        id: meta
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81
        with:
          images: |
            ghcr.io/${{ github.repository_owner }}/hadoop
          tags: |
            type=match,pattern=docker-hadoop-(.*),value={{branch}},group=1
          flavor: |
            latest=false

      - name: Login to ghcr.io
        id: login
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push image
        id: build
        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75
        with:
          platforms: linux/amd64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}