add packaging step on azure and refactor pipelines

deployment/build.centos

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+set -o errexit
+set -o xtrace
+
+# move to source directory
+pushd ${SOURCE_DIR}
+
+cp -a yarn.lock /tmp/yarn.lock
+
+# build rpm
+make -f fedora/Makefile srpm outdir=/root/rpmbuild/SRPMS
+rpmbuild --rebuild -bb /root/rpmbuild/SRPMS/jellyfin-*.src.rpm
+
+# move the artifacts
+mv /root/rpmbuild/RPMS/noarch/jellyfin-*.rpm /root/rpmbuild/SRPMS/jellyfin-*.src.rpm ${ARTIFACT_DIR}/
+
+if [[ ${IS_DOCKER} == YES ]]; then
+  chown -Rc $(stat -c %u:%g ${ARTIFACT_DIR}) ${ARTIFACT_DIR}
+fi
+
+rm -f fedora/jellyfin*.tar.gz
+cp -a /tmp/yarn.lock yarn.lock
+
+popd