diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2cc0d2d..f128cb5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,7 +34,7 @@ jobs:
       - name: Build and push orthanc-prometheus Docker image
         uses: docker/build-push-action@v4
         with:
-          context: .
+          context: ./prometheus
           file: Dockerfile
           push: true
           tags: ${{ steps.meta-orthanc-prometheus.outputs.tags }}