Modify .env variable names

src/main/resources/application.properties

@@ -14,9 +14,9 @@ spring.profiles.active=@spring.profiles.active@
 spring.config.import=optional:file:.env[.properties]
 
 # datasource
-spring.datasource.url=${NAMING_DB_URL:jdbc:postgresql://postgres:5432/discs_names}
-spring.datasource.username=${NAMING_DB_USERNAME:discs_names}
-spring.datasource.password=${NAMING_DB_PASSWORD:discs_names}
+spring.datasource.url=${NAMING_DATABASE_URL:jdbc:postgresql://postgres:5432/discs_names}
+spring.datasource.username=${NAMING_DATABASE_USERNAME:discs_names}
+spring.datasource.password=${NAMING_DATABASE_PASSWORD:discs_names}
 
 spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
 spring.jpa.hibernate.ddl-auto=none