Build your app and run it locally Run the npm install command in your local app directory to install the dependencies that you declared in your package.json file. $ npm install Start your app locally using the heroku local command, which is installed as part of the Heroku CLI. $ heroku local web Your app should now be running on http://localhost:5000/.
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Deploying
- git add .
- git commit -am"comment"
- git push heroku master