Renamed debug environment variable from DEBUG to KRKN_DEBUG (#17)

Signed-off-by: Tullio Sebastiani <[email protected]>

internal/config/config.json

@@ -24,5 +24,5 @@
   "label_title_regex": "LABEL krknctl\\.title=\\\"?(.*)\\\"?",
   "label_description_regex": "LABEL krknctl\\.description=\\\"?(.*)\\\"?",
   "label_input_fields_regex": "LABEL krknctl\\.input_fields=\\'?(\\[.*\\])\\'?",
-  "debug_environment_variable": "DEBUG"
+  "debug_environment_variable": "KRKN_DEBUG"
 }