Update the provided gitea.service to mention socket activation (#8531)

* Update the provided gitea.service since we have graceful restarting again

* Update contrib/systemd/gitea.service

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

contrib/systemd/gitea.service

@@ -2,11 +2,41 @@
 Description=Gitea (Git with a cup of tea)
 After=syslog.target
 After=network.target
+###
+# Don't forget to add the database service requirements
+###
+#
 #Requires=mysql.service
 #Requires=mariadb.service
 #Requires=postgresql.service
 #Requires=memcached.service
 #Requires=redis.service
+#
+###
+# If using socket activation for main http/s
+###
+#
+#After=gitea.main.socket
+#Requires=gitea.main.socket
+#
+###
+# (You can also provide gitea an http fallback and/or ssh socket too)
+#
+# An example of /etc/systemd/system/gitea.main.socket
+###
+##
+## [Unit]
+## Description=Gitea Web Socket
+## PartOf=gitea.service
+##
+## [Socket]
+## ListenStream=
+## NoDelay=true
+##
+## [Install]
+## WantedBy=sockets.target
+##
+###
 
 [Service]
 # Modify these two values and uncomment them if you have
@@ -26,11 +56,12 @@ WorkingDirectory=/var/lib/gitea/
 ExecStart=/usr/local/bin/gitea web -c /etc/gitea/app.ini
 Restart=always
 Environment=USER=git HOME=/home/git GITEA_WORK_DIR=/var/lib/gitea
-# If you want to bind Gitea to a port below 1024 uncomment
-# the two values below
+# If you want to bind Gitea to a port below 1024, uncomment
+# the two values below, or use socket activation to pass Gitea its ports as above
 ###
 #CapabilityBoundingSet=CAP_NET_BIND_SERVICE
 #AmbientCapabilities=CAP_NET_BIND_SERVICE
+###
 
 [Install]
 WantedBy=multi-user.target