Copiar imágenes entre registros con GitHub Actions

name: ci

on:
  push:

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Iniciar sesión en Docker Hub
        uses: docker/login-action@v4
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Iniciar sesión en GitHub Container Registry
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Configurar QEMU
        uses: docker/setup-qemu-action@v4

      - name: Configurar Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Compilar y enviar
        uses: docker/build-push-action@v7
        with:
          platforms: linux/amd64,linux/arm64
          push: true
          tags: |
            user/app:latest
            user/app:1.0.0

      - name: Enviar imagen a GHCR
        run: |
          docker buildx imagetools create \
            --tag ghcr.io/user/app:latest \
            --tag ghcr.io/user/app:1.0.0 \
            user/app:latest