Use VERSION file instead of hardcoded version strings

- pkg/rpm/sems.spec: Read version from VERSION file at build time,
  with fallback to 2.0.1 if file is not available
- Dockerfile-debian11: Use $(cat VERSION) in dch command
- Dockerfile-debian13: Use $(cat VERSION) in dch command

This ensures version consistency across the project. The VERSION file
(currently 2.0.1) is the single source of truth, already used by
CMakeLists.txt and Makefile.defs.

Author: marcel

Dockerfile-debian11

@@ -19,7 +19,7 @@ WORKDIR /sems
 RUN ls -al pkg/deb/bullseye/*
 RUN ln -s pkg/deb/bullseye ./debian
 RUN ls -al debian/*
-RUN dch -b -v 1.8.0 "sems"
+RUN dch -b -v $(cat VERSION) "sems"
 RUN dpkg-buildpackage -rfakeroot -us -uc
 RUN ls -al ..
 

Dockerfile-debian13

@@ -19,7 +19,7 @@ RUN git clone --depth 1 --branch master https://github.com/sems-server/sems.git
 WORKDIR /sems
 
 RUN mv pkg/deb/trixie ./debian
-RUN dch -b -v 1.8.0 "sems"
+RUN dch -b -v $(cat VERSION) "sems"
 RUN dpkg-buildpackage -rfakeroot -us -uc
 RUN ls -al ..
 

pkg/rpm/sems.spec

@@ -1,7 +1,7 @@
 # defines
 %global build_timestamp %(date +"%Y%m%d%H%M")
 %define _unpackaged_files_terminate_build 0
-%define version 2.0.0
+%define version %(cat VERSION)
 
 %global debug_package %{nil}