Few improvements such as

application.properties.prod file
new DTO for response when adding notice

src/main/resources/application.properties.prod

@@ -0,0 +1,20 @@
+spring.application.name=ArtisanConnectBackend
+
+## PostgreSQL
+spring.datasource.url=jdbc:postgresql://db:5432/postgres
+spring.datasource.driver-class-name=org.postgresql.Driver
+spring.datasource.username=postgres
+spring.datasource.password=postgres
+
+#initial data for db injection
+spring.sql.init.data-locations=classpath:sql/data.sql
+spring.sql.init.mode=always
+spring.jpa.defer-datasource-initialization=true
+
+# create and drop table, good for testing, production set to none or comment it
+spring.jpa.hibernate.ddl-auto=update
+
+#file.upload-dir=/Users/andsol/Desktop/uploads
+file.upload-dir=/app/images
+spring.servlet.multipart.max-file-size=10MB
+spring.servlet.multipart.max-request-size=10MB