yarn install
node weather.js
環境変数も登録
https://dashboard.heroku.com/apps/slack-weather-osaka/scheduler
utc11:00pm = jtc8:00am
git add .
git commit -m "fix"
git push heroku master//使用しない
git push origin main
heroku logs --tail
build package 追加後はキャッシュクリアが必要
https://help.heroku.com/18PI5RSY/how-do-i-clear-the-build-cache
heroku builds:cache:purge -a slack-weather-osaka
https://qiita.com/tamanugi/items/8cc1266265457f13b9ea