create Heroku.yml at first , then
- git init
- heroku apps:create <app_name>
- git add .
- git commit -m ""
- git remote add origin <repo's link from github>
- heroku ps
- heroku stack:set container
- gunicorn <project_Name in VS code> | to run app locally
- git push origin master
- git push heroku master
- add the config keys in setting in the app .