chore(reload.sh): default PRE_UPDATE_WAIT_DIVISOR (#472)

Author: Diego Rodríguez Baquero

container/reload.sh

@@ -1,6 +1,9 @@
 #!/bin/bash
 set -eu
 
+# Set a default value for PRE_UPDATE_WAIT_DIVISOR if it's not already set
+: "${PRE_UPDATE_WAIT_DIVISOR:=3600}"
+
 time=$((RANDOM % PRE_UPDATE_WAIT_DIVISOR))
 echo "going to wait $time seconds before updating"
 sleep "$time"