Fix obs-api install warning

obs-server.spec

@@ -6,7 +6,7 @@
 
 Name:           obs-server
 Version:        2.10.15
-Release:        1
+Release:        2
 Summary:        The Open Build Service -- Server Component
 License:        GPL-2.0-only OR GPL-3.0-only
 URL:            http://www.openbuildservice.org
@@ -277,8 +277,9 @@ rmdir /srv/obs 2> /dev/null || :
 %systemd_postun_with_restart obsstoragesetup.service
 
 %pre -n obs-api
-/usr/sbin/groupadd www
-/usr/sbin/useradd wwwrun
+getent group www >/dev/null || /usr/sbin/groupadd -r www
+
+getent passwd wwwrun >/dev/null || /usr/sbin/useradd -d / -g www -s /sbin/nologin -r wwwrun
 getent passwd obsapidelayed >/dev/null || \
   /usr/sbin/useradd -r -s /bin/bash -c "User for build service api delayed jobs" -d /srv/www/obs/api -g apache obsapidelayed
 
@@ -307,9 +308,9 @@ for i in production.rb ; do
 done
 
 if [ ! -s /srv/www/obs/api/config/secret.key ]; then
-  pushd /srv/www/obs/api
+  pushd /srv/www/obs/api >& /dev/null
   RAILS_ENV=production bin/rails secret > /srv/www/obs/api/config/secret.key
-  popd
+  popd >& /dev/null
 fi
 chmod 0640 /srv/www/obs/api/config/secret.key
 chown root.apache /srv/www/obs/api/config/secret.key
@@ -516,6 +517,9 @@ usermod -a -G docker obsservicerun
 %{_sbindir}/rcobsstoragesetup
 
 %changelog
+* Wed Jun 15 2022 wangkai <wangkai385@h-partners.com> - 2.10.15-2
+- Fix obs-api install warning
+
 * Wed May 25 2022 wangkai <wangkai385@h-partners.com> - 2.10.15-1
 - Upgrade to version 2.10.15