DOC: add minimal info about openSUSE linux pkgs (#1148)

docs/installation/local.md

@@ -15,6 +15,25 @@ $ gunzip "/usr/local/bin/loki.gz"
 $ chmod a+x "/usr/local/bin/loki"
 ```
 
+## Community openSUSE Linux packages
+
+If you use openSUSE Linux you can install packaged version of Loki with:
+
+1) Add the repository `https://download.opensuse.org/repositories/security:/logging/` to your system. 
+   E.g if you are using Leap 15.1 use `sudo zypper ar https://download.opensuse.org/repositories/security:/logging/openSUSE_Leap_15.1/security:logging.repo ; sudo zypper ref`
+
+2) Install package with `zypper in loki`
+
+3) Enable services:
+
+-  `systemd start loki` and `systemd enable loki`
+-  `systemd start promtail` and `systemd enable promtail`
+
+4) Adapt the configuration files:
+
+`/etc/loki/promtail.yaml`
+`/etc/loki/loki.yaml`
+
 ## Manual Build
 
 ### Prerequisites