diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 669bebc..cd783bd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,6 +57,7 @@ jobs:
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
           outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
+          file: Dockerfile.base
       -
         name: Export digest
         run: |