Now, install heroku cli.
heroku login
heroku git:remote -a xxx
heroku stack:set container
git add -f credentials.json src/.constants.js aria.sh client_secret.json
git commit -m 'Add private stuffs'
git push heroku HEAD:master --force
Warning: Don't even push to a public source with this commit included, those files contain your important credentials.
heroku ps:scale worker=0
heroku ps:scale worker=1