ci-build-tag-custom.yml

name: Pull, retag and push Docker image

on:
  workflow_dispatch:
    inputs:
      source_image:
        description: 'Source image repository (e.g. lfoppiano/grobid)'
        required: true
        default: 'lfoppiano/grobid'
      source_tag:
        description: 'Source image tag'
        required: true
        default: 'latest-crf'
      target_image:
        description: 'Target image repository (e.g. grobid/grobid)'
        required: true
        default: 'grobid/grobid'
      target_tag:
        description: 'Target image tag'
        required: true
        default: 'latest-crf'

jobs:
  retag:
    runs-on: ubuntu-latest
    steps:
      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Pull, retag and push
        run: |
          SRC="${{ github.event.inputs.source_image }}:${{ github.event.inputs.source_tag }}"
          DST="${{ github.event.inputs.target_image }}:${{ github.event.inputs.target_tag }}"
          echo "Pulling $SRC"
          docker pull "$SRC"
          echo "Tagging $SRC -> $DST"
          docker tag "$SRC" "$DST"
          echo "Pushing $DST"
          docker push "$DST"
          # optional cleanup
          docker rmi "$SRC" "$DST" || true