ci: fix uid of build user #339 (#340)

Co-authored-by: Steve Ramage <[email protected]>

Author: SJrX

ci/Build-Environment.Dockerfile

@@ -6,9 +6,9 @@ RUN apt-get install -y git openjdk-17-jdk-headless
 
 WORKDIR /tmp
 
-RUN useradd -m builduser -u 1001
+RUN useradd -m builduser -u 1000
 
-USER 1001
+USER 1000
 
 RUN git clone https://github.com/SJrX/systemdUnitFilePlugin.git -b 223.x