Dockerfile: add "all" stage to build binaries and extra tools

We still need a stage that build binaries and extra tools as well for
docker-ce-packaging repo: ff110508ff/static/Makefile (L41-L57)

This could be removed if we create a package for each project
like it's done in docker-packaging repo: https://github.com/docker/packaging/tree/main/pkg

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

.github/workflows/ci.yml

@@ -110,7 +110,7 @@ jobs:
         name: Build
         uses: docker/bake-action@v2
         with:
-          targets: binary
+          targets: all
           set: |
             *.platform=${{ matrix.platform }}
       -