web: voila --template=osscar --VoilaConfiguration.enable_nbextensions=True --VoilaConfiguration.file_whitelist="['.*']" example/bandsplot-example.ipynb --port=$PORT --no-browser --MappingKernelManager.cull_interval=60 --MappingKernelManager.cull_idle_timeout=120 --MappingKernelManager.cull_busy=True 
