docker - update

Dockerfile

@@ -1,7 +1,7 @@
 # ========================================================
 # Stage: Builder
 # ========================================================
-FROM --platform=$BUILDPLATFORM golang:alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21-alpine AS builder
 WORKDIR /app
 ARG TARGETARCH
 ENV CGO_ENABLED=1

docker-compose.yml

@@ -1,5 +1,5 @@
 ---
-version: "3.9"
+version: "3.8"
 
 services:
   3x-ui: