diff --git a/.github/workflows/ci-master-pr.yml b/.github/workflows/ci-master-pr.yml
index d02a5d78..58d28412 100644
--- a/.github/workflows/ci-master-pr.yml
+++ b/.github/workflows/ci-master-pr.yml
@@ -129,7 +129,7 @@ jobs:
       if: github.event_name == 'pull_request'
       uses: docker/build-push-action@v3
       with:
-        file: Dockerfile.${{ matrix.variant }}
+        file: Dockerfile
         context: '.'
         target: prod
         platforms: linux/amd64
@@ -143,7 +143,7 @@ jobs:
       if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/')
       uses: docker/build-push-action@v3
       with:
-        file: Dockerfile.${{ matrix.variant }}
+        file: Dockerfile
         context: '.'
         target: prod
         platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/s390x