CI: Build containers off of the right dockerfile

.github/workflows/container.yml

@@ -30,6 +30,7 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: .
+          file: Dockerfile.bot
           push: true
           tags: "${{ steps.meta.outputs.tags }}"
           labels: "${{ steps.meta.outputs.labels }}"