Matching UID/GID of 1st user of a Ubuntu system.

This is the default UID:GID mapping now as the previously hard-coded
values of 1002:1002 where used in production system, only.

Author: shocau

Diff for: Dockerfile

@@ -3,8 +3,8 @@ FROM alpine:3.19
 LABEL authors="Arnd Plumhoff <[email protected]>, Sascha Hoppe <[email protected]>"
 
 ARG ELKLIVE_HOME=/elklive
-ARG ELKLIVE_UID=1002
-ARG ELKLIVE_GID=1002
+ARG ELKLIVE_UID=1000
+ARG ELKLIVE_GID=1000
 
 RUN apk add --update --no-cache yarn git gradle curl