add docker registry monitoring

misc/checks.py

@@ -1,7 +1,7 @@
 from datetime import timedelta
 
 from alerting import alerts
-from misc import sensors, vuln
+from misc import docker_registry, sensors, vuln
 from misc.enums import UPSStatus
 
 IS_TESTING = False
@@ -155,3 +155,17 @@ async def ups_check() -> list[alerts.Alert]:
             )
 
     return alert_list
+
+
+async def docker_registry_check() -> list[alerts.Alert]:
+    updated_images = await docker_registry.get_updated_images()
+    alert_list = []
+    for image in updated_images:
+        alert_list.append(
+            alerts.Alert(
+                alert_type=alerts.AlertType.UPDATE,
+                message=f"{image} docker image has been updated",
+                severity=alerts.Severity.INFO,
+            )
+        )
+    return alert_list