Build from source, fix API base URL to use Vite proxy

docker-compose.yml

@@ -1,8 +1,6 @@
 services:
   mirofish:
-    image: ghcr.io/666ghj/mirofish:latest
-    # 加速镜像（如拉取缓慢可替换上方地址）
-    # image: ghcr.nju.edu.cn/666ghj/mirofish:latest
+    build: .
     container_name: mirofish
     environment:
       - LLM_API_KEY=${LLM_API_KEY}
@@ -12,8 +10,6 @@ services:
     expose:
       - "3000"
       - "5001"
-    command: >
-      sh -c "sed -i 's/server: {/server: { allowedHosts: true,/' /app/frontend/vite.config.js && echo 'VITE_API_BASE_URL=' > /app/frontend/.env && npm run dev"
     restart: unless-stopped
     volumes:
       - ./backend/uploads:/app/backend/uploads

frontend/src/api/index.js

@@ -2,7 +2,7 @@ import axios from 'axios'
 
 // 创建axios实例
 const service = axios.create({
-  baseURL: import.meta.env.VITE_API_BASE_URL || 'http://localhost:5001',
+  baseURL: '/api',
   timeout: 300000, // 5分钟超时（本体生成可能需要较长时间）
   headers: {
     'Content-Type': 'application/json'