testing buildkit pr-6200

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.github/workflows/.e2e-run.yml

@@ -50,7 +50,7 @@ jobs:
             buildkit_image: moby/buildkit:buildx-stable-1
           -
             buildx_version: https://github.com/docker/buildx.git#master
-            buildkit_image: moby/buildkit:master
+            buildkit_image: crazymax/buildkit:6200
     steps:
       -
         name: Checkout
@@ -138,7 +138,8 @@ jobs:
         uses: ./
         with:
           context: ./test
-          file: ./test/big.Dockerfile
+          file: ./test/multi.Dockerfile
+          platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

test/big.Dockerfile

@@ -1,3 +0,0 @@
-FROM busybox
-RUN dd if=/dev/zero of=/output.dat bs=648M count=1
-RUN uname -a