feat(fullstack): 接入 MySQL 8.0 持久化与 Spring Boot 3 分层企业级架构，支持文章与评论完整 CRUD

docker-compose.yml

@@ -1,9 +1,43 @@
 version: '3.8'
+
 services:
+  mysql:
+    image: mysql:8.0
+    container_name: blog-mysql
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: root123456
+      MYSQL_DATABASE: my_blog
+      TZ: Asia/Shanghai
+    command:
+      - --default-authentication-plugin=mysql_native_password
+      - --character-set-server=utf8mb4
+      - --collation-server=utf8mb4_unicode_ci
+    ports:
+      - "3307:3306"
+    volumes:
+      - mysql_data:/var/lib/mysql
+      - ./mysql/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-proot123456"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
   backend:
     build: ./backend
     container_name: blog-backend
     restart: always
+    depends_on:
+      mysql:
+        condition: service_healthy
+    environment:
+      DB_HOST: mysql
+      DB_PORT: 3306
+      DB_NAME: my_blog
+      DB_USER: root
+      DB_PASSWORD: root123456
+      TZ: Asia/Shanghai
     ports:
       - "8089:8080"
 
@@ -11,5 +45,10 @@ services:
     build: ./frontend
     container_name: blog-frontend
     restart: always
+    depends_on:
+      - backend
     ports:
       - "8088:80"
+
+volumes:
+  mysql_data: