Update

vendor/tailscale.com/feature/useproxy/useproxy.go

@@ -0,0 +1,18 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Package useproxy registers support for using system proxies.
+package useproxy
+
+import (
+	"tailscale.com/feature"
+	"tailscale.com/net/tshttpproxy"
+)
+
+func init() {
+	feature.HookProxyFromEnvironment.Set(tshttpproxy.ProxyFromEnvironment)
+	feature.HookProxyInvalidateCache.Set(tshttpproxy.InvalidateCache)
+	feature.HookProxyGetAuthHeader.Set(tshttpproxy.GetAuthHeader)
+	feature.HookProxySetSelfProxy.Set(tshttpproxy.SetSelfProxy)
+	feature.HookProxySetTransportGetProxyConnectHeader.Set(tshttpproxy.SetTransportGetProxyConnectHeader)
+}