refactor(docker): update nginx port and simplify docker-compose config

Dockerfile

@@ -21,7 +21,7 @@ FROM nginx:alpine AS production
 # 复制自定义 nginx 配置
 COPY <<EOF /etc/nginx/conf.d/default.conf
 server {
-    listen 5173;
+    listen 80;
     server_name localhost;
     root /usr/share/nginx/html;
     index index.html;
@@ -54,7 +54,7 @@ EOF
 COPY --from=builder /app/dist /usr/share/nginx/html
 
 # 暴露端口
-EXPOSE 5173
+EXPOSE 80
 
 # 启动 nginx
 CMD ["nginx", "-g", "daemon off;"]