Copy image between registries with GitHub Actions

name: ci  on:  push:  jobs:  docker:  runs-on: ubuntu-latest  steps:  - name: Login to Docker Hub  uses: docker/login-action@v3  with:  username: ${{ vars.DOCKERHUB_USERNAME }}  password: ${{ secrets.DOCKERHUB_TOKEN }}   - name: Login to GitHub Container Registry  uses: docker/login-action@v3  with:  registry: ghcr.io  username: ${{ github.repository_owner }}  password: ${{ secrets.GITHUB_TOKEN }}   - name: Set up QEMU  uses: docker/setup-qemu-action@v3   - name: Set up Docker Buildx  uses: docker/setup-buildx-action@v3   - name: Build and push  uses: docker/build-push-action@v6  with:  platforms: linux/amd64,linux/arm64  push: true  tags: |  user/app:latest  user/app:1.0.0   - name: Push image to GHCR  run: |  docker buildx imagetools create \  --tag ghcr.io/user/app:latest \  --tag ghcr.io/user/app:1.0.0 \  user/app:latest