Bump to Xray-core v1.8.6

Dockerfile

@@ -1,6 +1,6 @@
 FROM golang:1.21-alpine as builder
 
-ARG XRAYVER='v1.8.4'
+ARG XRAYVER='v1.8.6'
 
 RUN apk add --no-cache bash git build-base wget
 

run.sh

@@ -137,6 +137,7 @@ while true ; do
 done
 
 if [ "${XRAY}" != "1" ]; then
+    echo "Missing Xray connection option"
     usage
     exit 1
 fi