Import docs into main repository (#2874)

* import docs into main repository

Signed-off-by: Matti Ranta <matti@mdranta.net>

docs/content/doc/installation/run-as-service-in-ubuntu.en-us.md

@@ -0,0 +1,68 @@
+---
+date: "2017-07-21T12:00:00+02:00"
+title: "Run as service in Linux"
+slug: "linux-service"
+weight: 10
+toc: true
+draft: false
+menu:
+  sidebar:
+    parent: "installation"
+    name: "Linux service"
+    weight: 20
+    identifier: "linux-service"
+---
+
+### Run as service in Ubuntu 16.04 LTS  
+ 
+#### Using systemd  
+
+Run below command in terminal:  
+```
+sudo vim /etc/systemd/system/gitea.service
+```  
+
+Add code to the file from [here](https://github.com/go-gitea/gitea/blob/master/contrib/systemd/gitea.service).  
+
+Uncomment any service need to be enabled like mysql in this case in Unit section.  
+
+Change the user(git) accordingly to yours. And /home/git too if your username is different than git. Change the PORT or remove the -p flag if default port is used.  
+
+Lastly start and enable gitea at boot:  
+```
+sudo systemctl start gitea
+```  
+```
+sudo systemctl enable gitea
+```  
+
+
+#### Using supervisor  
+
+Install supervisor by running below command in terminal:  
+```
+sudo apt install supervisor
+```  
+
+Create a log dir for the supervisor logs(assuming gitea is installed in /home/git/gitea/):  
+```
+mkdir /home/git/gitea/log/supervisor
+```  
+
+Open supervisor config file in vi/vim/nano etc.  
+```
+sudo vim /etc/supervisor/supervisord.conf
+```  
+
+And append the code at the end of the file from [here](https://github.com/go-gitea/gitea/blob/master/contrib/supervisor/gitea).  
+
+Change the user(git) accordingly to yours. And /home/git too if your username is different than git. Change the PORT or remove the -p flag if default port is used.  
+
+Lastly start and enable supervisor at boot:  
+```
+sudo systemctl start supervisor
+```  
+```
+sudo systemctl enable supervisor
+```  
+