docs: examples moved to docs website

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

docs/advanced/push-multi-registries.md

@@ -1,53 +1,3 @@
 # Push to multi-registries
 
-The following workflow will connect you to [Docker Hub](https://github.com/docker/login-action#dockerhub)
-and [GitHub Container Registry](https://github.com/docker/login-action#github-container-registry)
-and push the image to these registries:
-
-```yaml
-name: ci
-
-on:
-  push:
-    branches:
-      - 'main'
-
-jobs:
-  docker:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      -
-        name: Login to Docker Hub
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      -
-        name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      -
-        name: Build and push
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: |
-            user/app:latest
-            user/app:1.0.0
-            ghcr.io/user/app:latest
-            ghcr.io/user/app:1.0.0
-```
+This page has moved to [Docker Docs website](https://docs.docker.com/build/ci/github-actions/examples/#push-to-multi-registries)