docs: 移除 Docker Compose 相关文档

移除了以下内容:
- Docker Compose 安装指南
- Clash、frps、rustdesk 和 vaultwarden 的 Docker Compose 部署文档
- 相关的 docker-compose.yml 文件和 .env 文件

docker/compose/gitlab-ce/docker-compose.yml

@@ -0,0 +1,19 @@
+services:
+  gitlab:
+    image: gitlab/gitlab-ce:17.11.1-ce.0
+    container_name: gitlab-ce
+    restart: always
+    network_mode: bridge
+    deploy:
+      resources:
+        limits:
+          cpus: '3'
+          memory: '6G'
+    ports:
+      - "1443:443"
+      - "1080:80"
+      - "1022:22"
+    volumes:
+      - ./data/etc:/etc/gitlab
+      - ./data/log:/var/log/gitlab
+      - ./data/opt:/var/opt/gitlab