Add env variables for app db user and pass

src/main/resources/application.conf

@@ -10,7 +10,9 @@ myapp = {
       dbName            = ${?APP_DB_NAME}
       url               = "jdbc:postgresql://"${myapp.database.dbHost}":"${myapp.database.dbPort}"/"${myapp.database.dbName}
       user              = "test_user"
+      user              = ${?APP_DB_NAME}
       password          = "password"
+      password          = ${?APP_DB_PASSWORD}
       numThreads        = 16
       queueSize         = 1000
       maxConnections    = 16