Pluto for Channels
Channels is a great application by Fancy Bits, LLC that allows you to enjoy free over-the-air HD TV.
Visit their great community support page to get started.
Updating Pluto TV guide data
When setting up Pluto TV as a custom channel, you need to specify a Playlist and EPG for the guide data.
One of the developers of the Channels app has already created a docker image that automatically updates both of these files.
See the Add Source to Channels section in the README.md file in the maddox/pluto-for-channels repository for additional detail.
Note: These files are updated every 3 hours.