Update README.md

Author: shmick

README.md

@@ -4,6 +4,8 @@ Scripts and other misc data for my TV setup.
 
 [channel_scan.sh](channel_scan.sh) - A utility to scan for ATSC channels on HDHomeRun ATSC devices ie: HDHR3 / HDHDR Dual / HDHR Plus/Extend
 
+Also available as a self contained Docker container [here](https://github.com/shmick/hdhomerun-scan)
+
 ###### Usage: 'channel_scan.sh -h' will display available options
 
 If no options are given, a full channel scan will be performed on the first available tuner found.