更新 Docker 镜像配置，清理 archive 文件

- 删除 archive/bbs-go 等历史代码
- 新增 nginx、frpc-client Docker 镜像配置
- 添加 .gitignore 忽略大文件

nginx/docker-compose.yml

@@ -0,0 +1,14 @@
+services:
+  nginx:
+    image: nginx:alpine
+    container_name: nginx-proxy
+    ports:
+      - "8081:80"
+      - "4430:443"
+    volumes:
+      - ./conf.d:/etc/nginx/conf.d:ro
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+    restart: unless-stopped
+    networks:
+      - trim-default
+