fix https://github.com/Neilpang/acme.sh/issues/1005#event-1232471561

acme.sh

@@ -4821,10 +4821,12 @@ install() {
     _debug "Skip install cron job"
   fi
 
+  if [ "$IN_CRON" != "1" ]; then
     if ! _precheck "$_nocron"; then
       _err "Pre-check failed, can not install."
       return 1
     fi
+  fi
 
   if [ -z "$_c_home" ] && [ "$LE_CONFIG_HOME" != "$LE_WORKING_DIR" ]; then
     _info "Using config home: $LE_CONFIG_HOME"
@@ -4876,7 +4878,9 @@ install() {
 
   _info "Installed to $LE_WORKING_DIR/$PROJECT_ENTRY"
 
+  if [ "$IN_CRON" != "1" ]; then
     _installalias "$_c_home"
+  fi
 
   for subf in $_SUB_FOLDERS; do
     if [ -d "$subf" ]; then