diff --git a/.github/build-postprocessors/action.yml b/.github/build-postprocessors/action.yml
index 27374b8..deb9636 100644
--- a/.github/build-postprocessors/action.yml
+++ b/.github/build-postprocessors/action.yml
@@ -10,7 +10,7 @@ runs:
     - name: Build and push
       uses: docker/build-push-action@v3
       with:
-        context: .
+        context: ./post-processor
         file: ./.github/build-postprocessors/Dockerfile
         platforms: linux/amd64,linux/arm64
         push: false