优化Docker本地部署

docker-compose.yml

@@ -9,7 +9,7 @@ services:
     volumes:
       - mysql-data:/var/lib/mysql
     ports:
-      - "3306:3306"
+      - "${MYSQL_PORT:-3306}:3306"
     healthcheck:
       test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
       interval: 10s
@@ -27,7 +27,7 @@ services:
       mysql:
         condition: service_healthy
     ports:
-      - "8000:8000"
+      - "${BACKEND_PORT:-8000}:8000"
 
   frontend:
     build:
@@ -35,7 +35,7 @@ services:
     depends_on:
       - backend
     ports:
-      - "8080:80"
+      - "${FRONTEND_PORT:-8080}:80"
 
 volumes:
   mysql-data: