hotfix dataloade build context

Author: blankdots

.github/workflows/publish.yml

@@ -62,8 +62,8 @@ jobs:
       - name: Build and push dataloader
         uses: docker/build-push-action@v2
         with:
-          context: .
-          file: ./deploy/dataloader/Dockerfile
+          context: ./deploy/dataloader
+          file: ./Dockerfile
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.prep.outputs.tagsData }}
           cache-from: type=registry,ref=cscfi/beacon-dataloader:latest