Add CLI log level override for docker exporter

monitoring/docker-exporter/exporter.py

@@ -372,8 +372,31 @@ def dump_service_image_mapping():
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Docker image update exporter")
     parser.add_argument("--dry-run", action="store_true", help="Only print service->image mapping and exit")
+    parser.add_argument(
+        "--services-up-script",
+        default=SERVICES_UP_SCRIPT,
+        help=f"Path to services-up script (default: {SERVICES_UP_SCRIPT})",
+    )
+    parser.add_argument(
+        "--cache-file",
+        default=CACHE_FILE,
+        help=f"Path to digest cache file (default: {CACHE_FILE})",
+    )
+    parser.add_argument(
+        "--log-level",
+        default=LOG_LEVEL,
+        help=f"Logging level (default: {LOG_LEVEL})",
+    )
     args = parser.parse_args()
 
+    effective_log_level = str(args.log_level).upper()
+    logging.getLogger().setLevel(getattr(logging, effective_log_level, logging.DEBUG))
+    logger.setLevel(getattr(logging, effective_log_level, logging.DEBUG))
+
+    SERVICES_UP_SCRIPT = args.services_up_script
+    CACHE_FILE = args.cache_file
+    REMOTE_DIGEST_CACHE = load_cache()
+
     if DRY_RUN or args.dry_run:
         dump_service_image_mapping()
         raise SystemExit(0)