update and split docs

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

docs/advanced/install-default.md

@@ -0,0 +1,28 @@
+# Install by default
+
+If you want set up the `docker build` command as an alias to
+`docker buildx build`:
+
+```yaml
+name: ci
+
+on:
+  push:
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          install: true
+      -
+        name: Build
+        run: |
+          docker build . # will run buildx
+```