enable looping so the script can handle scheduling

Start-DoneTickNotifier.ps1

@@ -3,6 +3,7 @@
 [string] $dtAPIKey = $ENV:DONETICKAPIKEY
 [string] $appriseWebhookURL = $ENV:APPRISEWEBHOOKURL
 [string] $appriseWebhookTag = $ENV:APPRISEWEBHOOKTAG
+[int[]]  $notificationTimes = $ENV:NOTIFICATIONTIMES | Sort-Object
 
 
 function Send-Notification
@@ -50,6 +51,7 @@ function Get-Chores
     }
 }
 
+while ($true) {
     $today = (Get-Date "23:59:59")
     $chores = Get-Chores
     
@@ -101,3 +103,19 @@ if ($todaysTasks.Count -ne 0)
         }
         Send-Notification -title "TODAY'S TASKS" -content $content
     }
+
+    Write-Host "Finding next notification time..."
+    foreach($time in $notificationTimes)
+    {
+        $now = Get-Date
+        $diff = $now.Hour - $time
+        if ($diff -lt 0) # next notification time
+        {
+            Write-Host "Next notification time is $time`:00"
+            $sleepTime = ($diff * -1) * 60
+            Write-Host "Sleeping for $sleepTime seconds"
+            Start-Sleep -Seconds $sleepTime
+            continue # leave loop
+        }
+    }
+}

docker-compose.yaml

@@ -10,3 +10,4 @@ services:
       - DONETICKAPIKEY=adminpass # donetick API key
       - APPRISEWEBHOOKURL=https://apprisehost/notify/config # apprise notification url
       - APPRISEWEBHOOKTAG=all # apprise notification tag
+      - NOTIFICATIONTIMES=8,12,17 # hours when notifications will be sent