chore: Adjust Docker Compose service port mappings and frontend API URLs, and remove direct PostgreSQL port exposure.

docker-compose.yml

@@ -9,8 +9,8 @@ services:
       POSTGRES_DB: sport_programming
     volumes:
       - postgres_data:/var/lib/postgresql/data
-    ports:
-      - "5432:5432"
+    # ports:
+    #   - "5432:5432"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U sport_prog -d sport_programming"]
       interval: 5s
@@ -43,7 +43,7 @@ services:
     volumes:
       - ./backend:/app
     ports:
-      - "8000:8000"
+      - "8091:8000"
     depends_on:
       db:
         condition: service_healthy
@@ -58,14 +58,14 @@ services:
       dockerfile: Dockerfile
     container_name: sp-frontend
     environment:
-      - NEXT_PUBLIC_API_URL=http://localhost:8000
-      - NEXT_PUBLIC_WS_URL=ws://localhost:8000
+      - NEXT_PUBLIC_API_URL=http://localhost:8091
+      - NEXT_PUBLIC_WS_URL=ws://localhost:8091
     volumes:
       - ./frontend:/app
       - /app/node_modules
       - /app/.next
     ports:
-      - "3000:3000"
+      - "3091:3000"
     depends_on:
       - backend
     restart: unless-stopped