docker exec -it flask-hello_flask_1 bash docker exec -it flask-hello_flask_1 python train_model.py
https://www.youtube.com/watch?v=UcN45dPX4LA&list=PLQJ7ptkRY-xYLEAC5Y_sKqrJ9RA-U7Dja&index=14
curl --header "Content-Type: application/json"
--request POST
--data '{"flower": "1,2,3,7"}'
http://localhost:5000/iris_post