I have to deploy using "--build-native-deps" under conda environment 

In my ubuntu environment (Azure Data Science VM), I have to use :
`pip install  --target=".python_packages/lib/site-packages"  -r requirements.txt
func azure functionapp publish <app> --build-native-deps`
 in order to successfully deploy Functions with torch. 
" --build local" doesn't work in my case. 