docs: examples moved to docs website

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

docs/advanced/named-contexts.md

@@ -1,98 +1,3 @@
 # Named contexts
 
-You can define [additional build contexts](https://docs.docker.com/engine/reference/commandline/buildx_build/#build-context)
-that can be accessed in your Dockerfile with `FROM name` or `--from=name`. When
-Dockerfile defines a stage with the same name it is overwritten.
-
-This can be useful with GitHub Actions to reuse results from other builds or
-pin an image to a spcific tag in your workflow.
-
-* [Pin image to a specific tag](#pin-image-to-a-specific-tag)
-* [Usage of the built image in other build steps](#usage-of-the-built-image-in-other-build-steps)
-
-## Pin image to a specific tag
-
-Replace `alpine:latest` with a pinned one:
-
-```dockerfile
-# syntax=docker/dockerfile:1
-FROM alpine
-RUN echo "Hello World"
-```
-
-```yaml
-name: ci
-
-on:
-  push:
-    branches:
-      - 'main'
-
-jobs:
-  docker:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      -
-        name: Build
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          build-contexts: |
-            alpine=docker-image://alpine:3.16
-          tags: myimage:latest
-```
-
-## Usage of the built image in other build steps
-
-By default, the [`setup-buildx` action](https://github.com/docker/setup-buildx-action#about)
-uses `docker-container` as a build driver, so built Docker images are not
-available in the builder container.
-
-With named contexts you can reuse the built image:
-
-```dockerfile
-# syntax=docker/dockerfile:1
-FROM alpine
-RUN echo "Hello World"
-```
-
-```yaml
-name: ci
-
-on:
-  push:
-    branches:
-      - 'main'
-
-jobs:
-  docker:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      -
-        name: Build base image
-        uses: docker/build-push-action@v3
-        with:
-          context: base
-          load: true
-          tags: my-base-image:latest
-      -
-        name: Build
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          build-contexts: |
-            alpine=docker-image://my-base-image:latest
-          tags: myimage:latest
-```
+This page has moved to [Docker Docs website](https://docs.docker.com/build/ci/github-actions/examples/#named-contexts)