Use 0.2s offset threshold for time sync

Author: kvinwang

basefiles/dstack-prepare.sh

@@ -96,7 +96,7 @@ mount_overlay /home $OVERLAY_TMP
 
 # Make sure the system time is synchronized
 log "Waiting for time sync..."
-chronyc waitsync 30 1 0 0 2>/dev/null || log "Warning: time sync timed out"
+chronyc waitsync 30 0.2 0 0 2>/dev/null || log "Warning: time sync timed out"
 
 if ! [[ -e /dev/tdx_guest ]]; then
 	modprobe tdx-guest