build: move postgres credentials to env

src/main/resources/application-dev.properties

@@ -0,0 +1,4 @@
+spring.datasource.url=jdbc:postgresql://postgres:5432/vodSystem
+spring.datasource.username=${POSTGRES_USER}
+spring.datasource.password=${POSTGRES_PASSWORD}
+spring.datasource.driver-class-name=org.postgresql.Driver

src/main/resources/application-local.properties

@@ -1,13 +1,12 @@
 # Database
 spring.datasource.url=jdbc:postgresql://localhost:5432/vodSystem
-spring.datasource.username=myuser
-spring.datasource.password=mypassword
+spring.datasource.username=${POSTGRES_USER}
+spring.datasource.password=${POSTGRES_PASSWORD}
 spring.datasource.driver-class-name=org.postgresql.Driver
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.show-sql=true
 spring.sql.init.mode=always
 spring.sql.init.schema-locations=classpath:db/schema.sql
-#spring.sql.init.data-locations=classpath:db/data.sql
 
 # Frontend
 frontend.url=http://localhost:5173