feat: added application.properties, changed .gitignore

.gitignore

@@ -5,7 +5,6 @@
 .project
 .classpath
 .env
-application.properties
 
 *.iml
 .DS_Store

src/main/resources/application.properties

@@ -0,0 +1,16 @@
+server.port=${PORT:8080}
+logging.level.org.atmosphere = warn
+spring.mustache.check-template-location = false
+
+# Launch the default browser when starting the application in development mode
+#vaadin.launch-browser=true
+# PostgreSQL configuration.
+spring.datasource.url = ${DB_ADDRESS}/${DB_NAME}
+spring.datasource.username = ${DB_USER}
+spring.datasource.password = ${DB_PASSWORD}
+spring.jpa.hibernate.ddl-auto = update
+# To improve the performance during development.
+# For more information https://vaadin.com/docs/latest/integrations/spring/configuration#special-configuration-parameters
+vaadin.allowed-packages = com.vaadin,org.vaadin,dev.hilla,com.application.munera
+spring.jpa.defer-datasource-initialization = true
+spring.sql.init.mode = always