Deploying to Heroku:

• Create new app on Heroku web page
• Choose region Europe

• Set heroku configuration from local terminal heroku git:remote -a name
• Push code to heroku git push heroku master

• Add postgres to heroku heroku addons:create heroku-postgresql
• Set Config Vars in Heroku:

DATABASE_URL (was set by adding addon)
SPRING_DATASOURCE_PASSWORD random string
SPRING_DATASOURCE_USER random string

• Add Config Vars to application.properties:

spring.datasource.url=${JDBC_DATABASE_URL}
spring.datasource.username=${JDBC_DATABASE_USERNAME}
spring.datasource.password=${JDBC_DATABASE_PASSWORD}

• Deploy if app is not working