chore(ci): 配置.NET构建工作流代理设置

为解决依赖包还原问题，在Gitea工作流中添加HTTP/HTTPS代理配置，
包括代理服务器地址和本地网络排除规则。

.gitea/workflows/dotnet.yml

@@ -18,20 +18,14 @@ jobs:
         uses: http://MonBianG.lan:3000/action/setup-dotnet@v4.3.0
         with:
           dotnet-version: 8.0.x
-      
+
-      - name: Diagnose network
-        run: |
-          echo "=== DNS test ==="
-          nslookup api.nuget.org || dig api.nuget.org || echo "DNS failed"
-          echo "=== Curl test (nuget.org) ==="
-          curl -v --connect-timeout 10 https://api.nuget.org/v3/index.json 2>&1 || echo "curl failed"
-          echo "=== Curl test (huawei mirror) ==="
-          curl -v --connect-timeout 10 https://repo.huaweicloud.com/repository/nuget/v3/index.json 2>&1 || echo "curl failed"
-          echo "=== Proxy env ==="
-          env | grep -i proxy || echo "no proxy set"
-      
       - name: Restore dependencies
-        run: dotnet restore --source "https://repo.huaweicloud.com/repository/nuget/v3/index.json"
+        run: dotnet restore
+        # 直接加代理得了
+        env:
+          http_proxy: "http://172.17.0.1:7890"
+          https_proxy: "http://172.17.0.1:7890"
+          no_proxy: "localhost,127.0.0.1,*.lan"
       
       - name: Build
         run: dotnet build --no-restore --configuration Release