feat(center/caddy): add WebTransport reverse-proxy passthrough via PR #7669 fork

deploy/center/caddy/Caddyfile

@@ -1,5 +1,8 @@
 {
 	email admin@juwan.xhttp.zip
+	servers {
+		enable_webtransport
+	}
 }
 
 (common_log) {
@@ -53,11 +56,23 @@ s3.juwan.xhttp.zip {
 
 juwan.xhttp.zip {
 	import common_log
-	reverse_proxy http://140.82.15.92:30080 {
-		lb_policy round_robin
-		health_uri /healthz
-		health_interval 10s
-		fail_duration 30s
-		import stream_proxy
+
+	handle /wt/* {
+		reverse_proxy https://140.82.15.92:8443 {
+			transport http {
+				versions 3
+				tls_insecure_skip_verify
+			}
+		}
+	}
+
+	handle {
+		reverse_proxy http://140.82.15.92:30080 {
+			lb_policy round_robin
+			health_uri /healthz
+			health_interval 10s
+			fail_duration 30s
+			import stream_proxy
+		}
 	}
 }

deploy/center/caddy/Dockerfile

@@ -0,0 +1,10 @@
+FROM caddy:2.11.2-builder-alpine AS builder
+
+# 编译带 PR #7669（experimental WebTransport reverse-proxy passthrough）
+# 的 Caddy。来源是 tomholford 的 fork 分支 webtransport-reverse-proxy。
+RUN xcaddy build \
+	--with github.com/caddyserver/caddy/v2=github.com/tomholford/caddy/v2@webtransport-reverse-proxy
+
+FROM caddy:2.11.2-alpine
+
+COPY --from=builder /usr/bin/caddy /usr/bin/caddy