fix: fix Dockerfile arg position

Author: chuntaojun

Diff for: deploy/standalone/vm/Dockerfile

@@ -1,10 +1,10 @@
+FROM ubuntu:latest
+
 ARG SERVER_VERSION=v1.10.0
 ARG CONSOLE_VERSION=v1.7.1
 ARG GOOS=linux
 ARG GOARCH=amd64
 
-FROM ubuntu:latest
-
 LABEL cn.polarismesh.image.authors="polaris"
 LABEL cn.polarismesh.image.documentation="https://polarismesh.cn/#/"