install-build-deps.sh has --dont-install and --platform options.

All docker files do not call isntall-build-deps.sh. Instead, cmake passes
REQUIREDPKGS to Dockerfiles, which is derived from the output of
./scripts/install-build-deps.sh --dont-install --platform PLATFORM.
This change enables caching package installaion during docker build.

Dockerfile/build-srpm.Dockerfile

@@ -0,0 +1,22 @@
+FROM rockylinux:9
+
+ARG REQUIREDPKGS
+ARG MSCP_VERSION
+
+# install pytest, sshd for test, and rpm-build
+RUN set -ex && yum -y install ${REQUIREDPKGS} rpm-build rpmdevtools
+
+ARG mscpdir="/mscp-${MSCP_VERSION}"
+ARG mscptgz="mscp-${MSCP_VERSION}.tar.gz"
+
+COPY . ${mscpdir}
+
+# prepare rpmbuild
+RUN rpmdev-setuptree \
+	&& rm -rf ${mscpdir}/build	\
+	&& tar zcvf /${mscptgz} --exclude-vcs ${mscpdir}	\
+	&& cp /${mscptgz} ~/rpmbuild/SOURCES/	\
+	&& cp ${mscpdir}/rpm/mscp.spec ~/rpmbuild/SPECS/
+
+# build rpm and src.rpm
+RUN rpmbuild -ba ~/rpmbuild/SPECS/mscp.spec