set these following properties in env variable
DATABASE_URL: jdbc:postgresql://{HOST}:{PORT}/{DATABASE_NAME}
DATABASE_USERNAME: {USERNAME}
DATABASE_PASSWORD: *********
NB:
Make sure the database exists
Add a folder migrations
in src/main/resources/
add or set addict.mutation in application.properties or MUTATE_DB in env vars to true
if you want postgres addict introspect your database.