feat: upgrade PostgreSQL image to version 17 and adjust port configuration

Author: AdamLBS

docker-compose.yml

@@ -3,15 +3,15 @@ version: "3.8"
 services:
   # PostgreSQL Database
   postgres:
-    image: postgres:16-alpine
+    image: postgres:17-alpine
     container_name: hushnet-postgres
     restart: unless-stopped
     environment:
       POSTGRES_USER: ${POSTGRES_USER:-postgres}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-dev}
       POSTGRES_DB: ${POSTGRES_DB:-e2ee}
-    ports:
-      - "${POSTGRES_PORT:-5432}:5432"
+    expose:
+      - "5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
       - ./sql_models/seed.sql:/docker-entrypoint-initdb.d/seed.sql