provide-docker-images.yml

name: Provide needed docker images in ghcr.io

on:
  workflow_dispatch:
  push:

env:
  REGISTRY_IMAGE: ghcr.io/novatecconsulting/opentelemetry-training

jobs:
  retag_and_push:
    name: Provide docker image ${{ matrix.image }} on ghcr.io
    runs-on: [ubuntu-latest]
    strategy:
      matrix:
        image:
          - maeddes/todobackend-springboot:v2404
          - maeddes/todoui-thymeleaf:v2404
          - maeddes/todoui-flask:v2404
          - maeddes/simple-generator:v2404
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Pull image from Docker Hub
        run: |
            docker pull docker.io/${{ matrix.image }}

      - name: Retag the image for GitHub Container Registry
        run: |
          docker tag ${{ matrix.image }} ${{ env.REGISTRY_IMAGE }}-${{ matrix.image }}

      - name: Push image to GitHub Container Registry
        run: |
          docker push ${{ env.REGISTRY_IMAGE }}-${{ matrix.image }}