chore: drop host port publishing, reach services by container name only

docker-compose.yml

@@ -10,8 +10,6 @@ services:
       POSTGRES_DB: ${DB_NAME:-dating_app}
     volumes:
       - postgres_data:/var/lib/postgresql/data
-    ports:
-      - "${DB_PORT:-5432}:5432"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-postgres} -d ${DB_NAME:-dating_app}"]
       interval: 5s
@@ -32,8 +30,6 @@ services:
       DB_HOST: postgres
       DB_PORT: 5432
       TZ: Asia/Tehran
-    ports:
-      - "${APP_PORT:-8080}:8080"
     volumes:
       - backend_uploads:/app/uploads
 
@@ -46,8 +42,6 @@ services:
     restart: unless-stopped
     depends_on:
       - backend
-    ports:
-      - "${WEB_PORT:-3000}:3000"
 
   admin:
     build:
@@ -58,8 +52,6 @@ services:
     restart: unless-stopped
     depends_on:
       - backend
-    ports:
-      - "${ADMIN_PORT:-3001}:3000"
 
 volumes:
   postgres_data: