make kernel

Author: MartinSchobben

.github/workflows/nightly-build.yaml

@@ -10,6 +10,7 @@ jobs:
     if: ${{ github.repository_owner == 'ProjectPythia' }}
     uses: ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml@main
     with:
+      build_command: make kernel && jupyter-book build . ; jupyter-book build .
       environment_name: eo-datascience-cookbook-dev
 
   link-check: