Add rpb build drone pipeline step

.drone.yml

@@ -3,10 +3,10 @@ type: docker
 name: default
 
 steps:
-- name: builddeb
+- name: Build Ubuntu 20:04 deb package
   image: ubuntu:20.04
   volumes:
-  - name: debhost
+  - name: deb_packages
     path: /debian
   commands:
     - export DEBIAN_FRONTEND=noninteractive
@@ -17,7 +17,19 @@ steps:
     - lch -v
     - cp lch_0.6.10_all.deb /debian
 
+- name: Build CentOS 7 rpm package
+  image: centos:0.7
+  volumes: 
+  - name: rpm_packages
+    path: /root/rpmbuild/RPMS/noarch/
+  commands:
+    - rpmbuild --target noarch -bb lch.spec
+    - rpm -i /root/rpmbuild/RPMS/noarch/*
+
 volumes:
-- name: debhost
+- name: deb_packages
   host:
     path: /opt/docker/production/lch-web/web/deb
+- name: rpm_packages
+  host:
+    path: /opt/docker/production/lch-web/web/rpm