fix(docker): use curl instead of wget for better compatibility

根據 @xqliu 建議，將 healthcheck 改用 curl 代替 wget。

Changes:
- Backend healthcheck: wget → curl -f
- Frontend healthcheck: wget → curl -f
- 保留 frontend 使用 127.0.0.1（避免 DNS 解析問題）

Benefits:
- curl 在大多數 Docker 基礎鏡像中都有預裝
- wget 在某些發行版可能缺失
- curl -f 會在 HTTP 錯誤時返回非零退出碼

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker-compose.yml

@@ -25,7 +25,7 @@ services:
     networks:
       - nofx-network
     healthcheck:
-      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:8080/api/health"]
+      test: ["CMD", "curl", "-f", "http://localhost:8080/api/health"]
       interval: 30s
       timeout: 10s
       retries: 3
@@ -45,7 +45,7 @@ services:
     depends_on:
       - nofx
     healthcheck:
-      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://127.0.0.1/health"]
+      test: ["CMD", "curl", "-f", "http://127.0.0.1/health"]
       interval: 30s
       timeout: 10s
       retries: 3