Docusaurus-ify 1.20 (#26052)

See https://github.com/go-gitea/gitea/pull/26051

---------

Signed-off-by: jolheiser <john.olheiser@gmail.com>
Co-authored-by: JonRB <4564448+eeyrjmr@users.noreply.github.com>

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

@@ -0,0 +1,77 @@
+---
+date: "2017-07-21T12:00:00+02:00"
+title: "Run as service in Linux"
+slug: "linux-service"
+sidebar_position: 40
+toc: false
+draft: false
+aliases:
+  - /en-us/linux-service
+menu:
+  sidebar:
+    parent: "installation"
+    name: "Linux service"
+    sidebar_position: 40
+    identifier: "linux-service"
+---
+
+### Run Gitea as Linux service
+
+You can run Gitea as service, using either systemd or supervisor. The steps below tested on Ubuntu 16.04, but those should work on any Linux distributions (with little modification).
+
+#### Using systemd
+
+Copy the sample [gitea.service](https://github.com/go-gitea/gitea/blob/main/contrib/systemd/gitea.service) to `/etc/systemd/system/gitea.service`, then edit the file with your favorite editor.
+
+Uncomment any service that needs to be enabled on this host, such as MySQL.
+
+Change the user, home directory, and other required startup values. Change the
+PORT or remove the -p flag if default port is used.
+
+Enable and start Gitea at boot:
+
+```
+sudo systemctl enable gitea
+sudo systemctl start gitea
+```
+
+If you have systemd version 220 or later, you can enable and immediately start Gitea at once by:
+
+```
+sudo systemctl enable gitea --now
+```
+
+#### 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
+```
+
+Append the configuration from the sample
+[supervisord config](https://github.com/go-gitea/gitea/blob/main/contrib/supervisor/gitea) to `/etc/supervisor/supervisord.conf`.
+
+Using your favorite editor, change the user (`git`) and home
+(`/home/git`) settings to match the deployment environment. Change the PORT
+or remove the -p flag if default port is used.
+
+Lastly enable and start supervisor at boot:
+
+```
+sudo systemctl enable supervisor
+sudo systemctl start supervisor
+```
+
+If you have systemd version 220 or later, you can enable and immediately start supervisor by:
+
+```
+sudo systemctl enable supervisor --now
+```