[Issue #193] added instructions for Astra Linux installation

Author: gsmolk

README.md

@@ -82,6 +82,11 @@ sudo sh -c 'echo "deb-src [arch=amd64] https://repo.postgrespro.ru/pg_probackup/
   /etc/apt/sources.list.d/pg_probackup.list' && sudo apt-get update
 sudo apt-get source pg-probackup-{13,12,11,10,9.6,9.5}
 
+#DEB Astra Linix Orel
+sudo sh -c 'echo "deb [arch=amd64] https://repo.postgrespro.ru/pg_probackup/deb/ stretch main-stretch" > /etc/apt/sources.list.d/pg_probackup.list'
+sudo wget -O - https://repo.postgrespro.ru/pg_probackup/keys/GPG-KEY-PG_PROBACKUP | sudo apt-key add - && sudo apt-get update
+sudo apt-get install pg-probackup-{13,12,11,10,9.6,9.5}{-dbg,}
+
 #RPM Centos Packages
 rpm -ivh https://repo.postgrespro.ru/pg_probackup/keys/pg_probackup-repo-centos.noarch.rpm
 yum install pg_probackup-{13,12,11,10,9.6,9.5}