Merge pull request containers#19458 from openshift-cherrypick-robot/c…

…herry-pick-19451-to-v4.6

[v4.6] [CI:DOCS] Mention TimeoutStartSec in quadlet man page

docs/source/markdown/podman-systemd.unit.5.md

@@ -46,6 +46,16 @@ file in the /etc/containers/systemd/users/${UID}/ directory, then only the
 user with the matching UID execute the Quadlet when the login
 session gets started.
 
+Note: When a Quadlet is starting, Podman often pulls one more container images which may take a considerable amount of time.
+Systemd defaults service start time to 90 seconds, or fails the service. Pre-pulling the image or extending
+the systemd timeout time for the service using the *TimeoutStartSec* Service option can fix the problem.
+
+Adding the following snippet to a Quadlet file extends the systemd timeout to 15 minutes.
+
+```
+[Service]
+TimeoutStartSec=900
+```
 
 ### Enabling unit files
 
@@ -821,6 +831,8 @@ Exec=sleep 60
 [Service]
 # Restart service when sleep finishes
 Restart=always
+# Extend Timeout to allow time to pull the image
+TimeoutStartSec=900
 
 [Install]
 # Start by default on boot