build deb sources inside a container

A new build target `build-deb` builds mscp deb inside a docker
container. All debuild -us -uc outputs are copied to build/debbuild
directory.

CMakeLists.txt

@@ -264,6 +264,20 @@ add_custom_target(docker-test-all		DEPENDS ${DOCKER_TESTS})
 add_custom_target(docker-pkg-all		DEPENDS ${DOCKER_PKGS})
 
 
+### debuild-related fefinitions
+
+set(DEBBUILDCONTAINER mscp-build-deb)
+add_custom_target(build-deb
+	COMMENT "build mscp deb files inside a container"
+	WORKING_DIRECTORY ${mscp_SOURCE_DIR}
+	BYPRODUCTS ${CMAKE_BINARY_DIR}/debbuild
+	COMMAND
+	docker build -t ${DEBBUILDCONTAINER} -f docker/build-deb.Dockerfile .
+	COMMAND
+	docker run --rm -v ${CMAKE_BINARY_DIR}:/out ${DEBBUILDCONTAINER}
+	cp -r /debbuild /out/)
+
+
 ### rpmbuild-related definitions
 
 # generate files for rpmbuild
@@ -289,3 +303,4 @@ add_custom_target(build-srpm
 	docker run --rm -v ${CMAKE_BINARY_DIR}:/out ${RPMBUILDCONTAINER}
 	cp /root/rpmbuild/SRPMS/${SRPMFILE} /out/)
 
+

docker/build-deb.Dockerfile

@@ -0,0 +1,20 @@
+FROM ubuntu:22.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+RUN set -ex && apt-get update && apt-get install -y --no-install-recommends \
+	ca-certificates build-essential devscripts debhelper gcc make cmake
+
+ARG mscpdir="/debbuild/mscp"
+
+COPY . ${mscpdir}
+
+# install build dependency
+RUN ${mscpdir}/scripts/install-build-deps.sh
+
+# build
+RUN cd ${mscpdir} 	\
+	&& debuild -us -uc	\
+	&& mv ${mscpdir} /
+
+# Then all debuild output files exsit at /debbuild
+

scripts/install-build-deps.sh

@@ -19,7 +19,7 @@ case $platform in
 		brew install openssl@1.1
 		;;
 	Linux-ubuntu*)
-		apt-get install -y \
+		apt-get install --no-install-recommends -y \
 			gcc make cmake zlib1g-dev libssl-dev libkrb5-dev
 		;;
 	Linux-centos* | Linux-rhel* | Linux-rocky* | Linux-almalinux)