dockerfile: rename source dir

Dockerfile

@@ -1,7 +1,7 @@
 # sync with https://github.com/fphammerle/wireless-sensor-mqtt/blob/master/Dockerfile
 
 ARG BASE_IMAGE=python:3.8-alpine3.13
-ARG SOURCE_DIR_PATH=/wireless-sensor-mqtt
+ARG SOURCE_DIR_PATH=/intertechno-cc1101-mqtt
 
 
 # hadolint ignore=DL3006